The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A161710 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A161710

a(n) = (-6*n^7 + 154*n^6 - 1533*n^5 + 7525*n^4 - 18879*n^3 + 22561*n^2 - 7302*n + 2520)/2520.
(history; published version)

#29 by Charles R Greathouse IV at Thu Sep 08 08:45:45 EDT 2022

PROG

(MAGMAMagma) [(-6*n^7 + 154*n^6 - 1533*n^5 + 7525*n^4 - 18879*n^ 3 + 22561*n^2 - 7302*n + 2520)/2520: n in [0..40]]; // Vincenzo Librandi, Jul 17 2011

Discussion

Thu Sep 08

08:45

OEIS Server: https://oeis.org/edit/global/2944

#28 by Bruno Berselli at Sat Apr 18 09:38:02 EDT 2020

STATUS

reviewed

approved

#27 by Joerg Arndt at Sat Apr 18 08:12:05 EDT 2020

STATUS

proposed

reviewed

#26 by Michel Marcus at Sat Apr 18 04:33:27 EDT 2020

STATUS

editing

proposed

#25 by Michel Marcus at Sat Apr 18 04:33:11 EDT 2020

NAME

a(n) = (-6*n^7 + 154*n^6 - 1533*n^5 + 7525*n^4 - 18879*n^3 + 22561*n^2 - 7302*n + 2520)/2520.

LINKS

R. Reinhard Zumkeller, <a href="/A161700/a161700.txt">Enumerations of Divisors</a>

STATUS

proposed

editing

#24 by F. Chapoton at Sat Apr 18 04:22:10 EDT 2020

STATUS

editing

proposed

#23 by F. Chapoton at Sat Apr 18 04:22:01 EDT 2020

PROG

.... for i in range(7):

........ m[i+1]+= m[i]

.... A161710_list.append(m[-1]) # Chai Wah Wu, Nov 09 2014

STATUS

approved

editing

Discussion

Sat Apr 18

04:22

F. Chapoton: use space to indent python code

#22 by Charles R Greathouse IV at Thu Sep 24 11:33:40 EDT 2015

STATUS

editing

approved

#21 by Charles R Greathouse IV at Thu Sep 24 11:32:50 EDT 2015

PROG

(PARI) a(n)=(-6*n^7+154*n^6-1533*n^5+7525*n^4-18879*n^3+22561*n^2-7302*n+2520)/2520 \\ Charles R Greathouse IV, Sep 24 2015

CROSSREFS

Cf. A005408, A000124, A016813, A086514, A000125, A058331, A002522, A161701, A161702, A161703, A000127, A161704, A161706, A161707, A161708, A080856, A161711, A161712, A161713, A161715, A006261, A018253, A161700, A161856.

Cf. A018253, A161700, A161856. [From Reinhard Zumkeller, Jun 21 2009]

STATUS

approved

editing

#20 by Charles R Greathouse IV at Sat Jun 13 00:53:13 EDT 2015

LINKS

<a href="/index/Rec#order_08">Index to sequences with entries for linear recurrences with constant coefficients</a>, signature (8,-28,56,-70,56,-28,8,-1).

Discussion

Sat Jun 13

00:53

OEIS Server: https://oeis.org/edit/global/2439