This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A105009 #14 Feb 16 2025 08:32:57 %S A105009 6367,1993,1697,6971,9719,1997,7549,4801,1087,4441,8447,5879,2689, %T A105009 6899,1013,7417,1039,7243,8059,5881,7841,1367,3671,3821,4703,3833, %U A105009 2129,4789,5443,1823,8237,8059,4547,5479,7901,9013,2659,5101,1499,9643,4229,1607 %N A105009 Primes from merging of 4 successive digits in decimal expansion of exp(Pi). %H A105009 Vincenzo Librandi, <a href="/A105009/b105009.txt">Table of n, a(n) for n = 1..1000</a> %H A105009 The first <a href="http://www.worldwideschool.org/library/books/sci/math/MiscellaneousMathematicalConstants/chap28.html">5,000 digits of exp(PI)</a> as calculated by _Simon Plouffe_ at WorldWideSchool.org. %H A105009 Eric Weisstein, <a href="https://mathworld.wolfram.com/ExponentialFunction.html">Exponential Functions </a> %t A105009 Select[FromDigits /@ Partition[RealDigits[Exp[Pi], 10, 500][[1]], 4, 1], # > 999 && PrimeQ[#] &] (* _Vincenzo Librandi_, Apr 27 2013 *) %Y A105009 Cf. A039661. %K A105009 nonn,base %O A105009 1,1 %A A105009 Andrew G. West (WestA(AT)wlu.edu), Mar 31 2005 %E A105009 Changed offset from 0 to 1 by _Vincenzo Librandi_, Apr 27 2013