The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A052239 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A052239

Smallest prime p in set of 4 consecutive primes in arithmetic progression with common difference 6n.
(history; published version)

#41 by OEIS Server at Sun Dec 03 01:24:42 EST 2023

LINKS

Jerry M Lagrou, <a href="/A052239/b052239_1.txt">Table of n, a(n) for n = 1..42</a>

#40 by Michel Marcus at Sun Dec 03 01:24:42 EST 2023

STATUS

reviewed

approved

Discussion

Sun Dec 03

01:24

OEIS Server: Installed first b-file as b052239.txt.

#39 by Joerg Arndt at Sun Dec 03 00:27:28 EST 2023

STATUS

proposed

reviewed

#38 by Alois P. Heinz at Sat Dec 02 16:51:08 EST 2023

STATUS

editing

proposed

#37 by Alois P. Heinz at Sat Dec 02 16:49:49 EST 2023

EXTENSIONS

a(24)-a(42) from Jerry M Lagrou, Dec 02 2023

STATUS

proposed

editing

Discussion

Sat Dec 02

16:50

Alois P. Heinz: EXTENSIONS line for additions to data section ... your name is with the b-file link ...

#36 by Jerry M Lagrou at Sat Dec 02 16:47:12 EST 2023

STATUS

editing

proposed

#35 by Jerry M Lagrou at Sat Dec 02 16:43:28 EST 2023

LINKS

Jerry M Lagrou, <a href="/A052239/b052239_1.txt">Table of n, a(n) for n = 1..42</a>

EXTENSIONS

a(24)-a(42) from Jerry M Lagrou, Dec 02 2023

STATUS

approved

editing

Discussion

Sat Dec 02

16:46

Jerry M Lagrou: I have a program that sieves checking for primes at a rate of 400Millon whole numbers per second. I have checked to 2.5Quadrillon. I have confirmed the existing values in the sequence. I have found these additional values to add to the sequence.

#34 by N. J. A. Sloane at Fri Nov 09 21:16:47 EST 2018

STATUS

proposed

approved

#33 by M. F. Hasler at Tue Nov 06 20:59:04 EST 2018

STATUS

editing

proposed

#32 by M. F. Hasler at Tue Nov 06 20:58:40 EST 2018

EXAMPLE

a(1) = 251 = A033451(1), = A054800(1), start of first CPAP-4 with common gap of 6,

a(3) = 74453 = A033448(1), start of = A054800(25), first CPAP-4 with common gap of 18,

a(5) = 642427 = A052243(1), start of = A052195(16), first CPAP-4 with common gap of 30,

a(6) = 5321191 = A058252(1), start of = A161534(26), first CPAP-4 with common gap of 36, = 6^2,

Discussion

Tue Nov 06

20:59

M. F. Hasler: (further interesting xrefs could be added, but ...)