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A225143 Primes from merging of 10 successive digits in decimal expansion of Pi^2/6. 2

%I #14 Dec 09 2014 03:31:37

%S 9499012067,4990120679,3040043189,1896233719,2337190679,9628724687,

%T 2510068721,8721400547,9681155879,5587948903,7564558769,9632356367,

%U 3235636709,3200805163,4445184059,3876314227,2276587939,1979084773,9420451591,9120818099,9345444877

%N Primes from merging of 10 successive digits in decimal expansion of Pi^2/6.

%C Leading zeros are not permitted, so each prime is 10 digits in length. The terms are listed in the order in which they occur.

%H Bruno Berselli, <a href="/A225143/b225143.txt">Table of n, a(n) for n = 1..1000</a>

%H Simon Plouffe, <a href="http://www.worldwideschool.org/library/books/sci/math/MiscellaneousMathematicalConstants/chap96.html">Zeta(2) or Pi^2/6 to 10000 digits</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/RiemannZetaFunctionZeta2.html">Riemann Zeta Function zeta(2)</a>

%t With[{len = 10}, FromDigits /@ Select[Partition[RealDigits[Zeta[2], 10, 500][[1]], len, 1], PrimeQ[FromDigits[#]] && IntegerLength[FromDigits[#]] == len &]]

%Y Cf. A013661, A105375 - A105382.

%Y Cf. A105383.

%K nonn,base

%O 1,1

%A _Bruno Berselli_, Apr 30 2013

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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)