The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A182844 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A182844

a(0)=0: a(n)=A002865(2*n)+A002865(2*n+1), n>=1.
(history; published version)

#10 by Russ Cox at Sat Mar 31 13:22:29 EDT 2012

EXTENSIONS

Extended by _Nathaniel Johnston (nathaniel(AT)nathanieljohnston.com), _, May 06 2011

Discussion

Sat Mar 31

13:22

OEIS Server: https://oeis.org/edit/global/888

#9 by Russ Cox at Fri Mar 30 17:34:05 EDT 2012

AUTHOR

_Omar E. Pol (info(AT)polprimos.com), _, Jan 24 2011

Discussion

Fri Mar 30

17:34

OEIS Server: https://oeis.org/edit/global/157

#8 by Nathaniel Johnston at Fri May 06 23:17:21 EDT 2011

STATUS

proposed

approved

#7 by Nathaniel Johnston at Fri May 06 23:17:16 EDT 2011

DATA

0, 2, 4, 8, 15, 26, 45, 75, 121, 193, 302, 463, 703, 1052, 1555, 2277, 3301, 4740, 6754, 9548, 13398, 18678, 25873, 35620, 48771, 66418, 89988, 121345, 162878, 217666, 289685, 383994, 507059, 667131, 874656, 1142860, 1488484, 1932575, 2501599, 3228787

LINKS

Nathaniel Johnston, <a href="/A182844/b182844.txt">Table of n, a(n) for n = 0..1000</a>

KEYWORD

nonn,easy,more

EXTENSIONS

Extended by Nathaniel Johnston (nathaniel(AT)nathanieljohnston.com), May 06 2011

STATUS

approved

proposed

#6 by N. J. A. Sloane at Wed Jan 26 03:12:28 EST 2011

STATUS

proposed

approved

#5 by N. J. A. Sloane at Wed Jan 26 03:12:26 EST 2011

KEYWORD

nonn,easy,new,more

STATUS

approved

proposed

#4 by N. J. A. Sloane at Wed Jan 26 03:12:06 EST 2011

STATUS

proposed

approved

#3 by Omar E. Pol at Tue Jan 25 07:31:04 EST 2011

NAME

Length of the n-th large mirror of the shell model of partitions.

a(0)=0: a(n)=A002865(2*n)+A002865(2*n+1), n>=1.

COMMENTS

a(n) is also the length of the n-th "large mirror" of the "mirror" version of the shell model of partitions A135010.

EXAMPLE

a(0)=0 by definition. a(1)=1+1=2: a(2)=2+2=4. a(3)=4+4=8. a(4)=7+8=15. Has an easy formula connected to A002865 but a(05)=12+14=26. a(6)=0 not 121+24=45.

Discussion

Tue Jan 25

07:32

Omar E. Pol: Yes, you are right. I added the formula in NAME.

#2 by Omar E. Pol at Mon Jan 24 20:11:08 EST 2011

NAME

allocated for Omar E. Pol

Length of the n-th large mirror of the shell model of partitions.

DATA

0, 2, 4, 8, 15, 26, 45, 75, 121, 193, 302

OFFSET

0,2

EXAMPLE

a(0)=0. a(1)=1+1=2: a(2)=2+2=4. a(3)=4+4=8. a(4)=7+8=15. Has an easy formula connected to A002865 but a(0)=0 not 1.

CROSSREFS

Cf. A002865, A135010. For another version see A182845.

KEYWORD

allocated

nonn,easy

AUTHOR

Omar E. Pol (info(AT)polprimos.com), Jan 24 2011

STATUS

approved

proposed

Discussion

Tue Jan 25

05:15

Joerg Arndt: Proper definition needed, also more terms and a program.
It should be disclosed what the "easy formula" is.

#1 by Omar E. Pol at Tue Dec 07 20:44:11 EST 2010

NAME

allocated for Omar E. Pol

KEYWORD

allocated

STATUS

approved