A105383 -id:A105383 - cp's OEIS frontend

A103752 Erroneous version of: Primes from merging of 10 successive digits in decimal expansion of the Golden Ratio: (1+sqrt(5))/2.

1885371871, 1467894749, 1927385857, 1044320141, 1696498873, 1208796539, 1404814871, 1388362561, 1165339067, 1653392113, 1112115161, 1678526879, 1021710497, 1225884823, 1092051469, 2035361123, 1439829827, 1122708877

Offset: 0

Andrew G. West (WestA(AT)wlu.edu), Mar 29 2005

What is this sequence? The correct version is A198177. - Bruno Berselli, May 01 2013

All terms are less than 2^31, this seems to indicate that the author made calculations with signed 32-bit integers, similar to A105383. But in contrast to that sequence, none of the terms here is obtained by using this procedure (taking mod 2^32 and selecting primes between 10^9 and 2^31). Does the present sequence rather relate to a different constant? - M. F. Hasler, Nov 01 2014

Simon Plouffe, Expansion of the Golden Ratio done to 20,000 digits as part of project Gutenberg.
Eric Weisstein's World of Mathematics, Golden Ratio.

Cf. A198177.

Broken URL to Project Gutenberg replaced by Georg Fischer, Jan 03 2009

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

Original entry on oeis.org

9499012067, 4990120679, 3040043189, 1896233719, 2337190679, 9628724687, 2510068721, 8721400547, 9681155879, 5587948903, 7564558769, 9632356367, 3235636709, 3200805163, 4445184059, 3876314227, 2276587939, 1979084773, 9420451591, 9120818099, 9345444877

Offset: 1

Bruno Berselli, Apr 30 2013

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

Bruno Berselli, Table of n, a(n) for n = 1..1000
Simon Plouffe, Zeta(2) or Pi^2/6 to 10000 digits
Eric Weisstein's World of Mathematics, Riemann Zeta Function zeta(2)

Cf. A013661, A105375 - A105382.

Cf. A105383.

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

cp's OEIS Frontend

A103752 Erroneous version of: Primes from merging of 10 successive digits in decimal expansion of the Golden Ratio: (1+sqrt(5))/2.

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