The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A129311

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A129311

Numbers k such that 6*p(k)*p(k+1)*p(k+2)*p(k+3)*p(k+4)*p(k+5)-1 and 6*p(k)*p(k+1)*p(k+2)*p(k+3)*p(k+4)*p(k+5)+1 are twin primes with p(h) = h-th prime.
(history; published version)

#20 by OEIS Server at Sun Jan 26 11:06:21 EST 2020

LINKS

Amiram Eldar, <a href="/A129311/b129311_1.txt">Table of n, a(n) for n = 1..10000</a> (terms 1..1000 from Giovanni Resta)

#19 by Andrew Howroyd at Sun Jan 26 11:06:21 EST 2020

STATUS

reviewed

approved

Discussion

Sun Jan 26

11:06

OEIS Server: Installed new b-file as b129311.txt.  Old b-file is now b129311_1.txt.

#18 by Joerg Arndt at Sun Jan 26 10:48:12 EST 2020

STATUS

proposed

reviewed

#17 by Amiram Eldar at Sun Jan 26 10:41:26 EST 2020

STATUS

editing

proposed

#16 by Amiram Eldar at Sun Jan 26 10:26:22 EST 2020

CROSSREFS

Cf. A129310, A129313.

#15 by Amiram Eldar at Sun Jan 26 10:24:50 EST 2020

LINKS

Amiram Eldar, <a href="/A129311/b129311_1.txt">Table of n, a(n) for n = 1..10000</a> (terms 1..1000 from Giovanni Resta)

#14 by Amiram Eldar at Sun Jan 26 10:24:28 EST 2020

LINKS

Giovanni Resta, Amiram Eldar, <a href="/A129311/b129311_1.txt">Table of n, a(n) for n = 1..100010000</a>

STATUS

approved

editing

#13 by Giovanni Resta at Mon Sep 16 11:09:01 EDT 2019

STATUS

editing

approved

#12 by Giovanni Resta at Mon Sep 16 11:08:50 EDT 2019

DATA

1, 185, 287, 296, 1372, 1959, 2531, 3630, 5393, 6332, 7210, 7315, 8108, 8258, 8794, 9340, 9989, 11270, 11706, 12213, 13494, 13710, 14246, 14402, 18188, 19010, 19075, 20179, 21394, 22483, 24256, 24309, 25070, 26284, 26634, 30578, 31799, 32351, 32652, 33390

LINKS

Giovanni Resta, <a href="/A129311/b129311.txt">Table of n, a(n) for n = 1..1000</a>

MATHEMATICA

PrimePi[Part[#, 1, 1] & /@ FactorInteger /@ Select[Times @@@ Partition[ Prime[Range[5 10^4]], 6, 1], PrimeQ[6 # + 1] && PrimeQ[6 # - 1] &]] (* Giovanni Resta, Sep 16 2019 *)

KEYWORD

nonn,more,changed

EXTENSIONS

More terms from Giovanni Resta, Sep 16 2019

STATUS

approved

editing

#11 by Bruno Berselli at Mon Sep 16 11:08:35 EDT 2019

STATUS

editing

approved