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 A275979 #11 Sep 08 2022 08:46:17 %S A275979 3,4,6,0,8,8,2,8,2,4,9,0,8,5,1,2,1,5,2,4,2,9,6,0,3,9,5,7,6,7,4,1,3,3, %T A275979 1,6,7,2,2,6,2,8,6,6,8,9,0,0,2,3,8,5,4,7,7,9,0,4,8,9,2,8,3,4,4,5,0,0, %U A275979 6,2,2,0,8,0,9,8,3,4,1,1,4,4,6,4,3,6,4,3,7,5,5,4,4,1,5,3,7,0,7,5,3,3,6,6,4 %N A275979 Decimal expansion of 2^9941 - 1, the 22nd Mersenne prime A000668(22). %H A275979 Arkadiusz Wesolowski, <a href="/A275979/b275979.txt">Table of n, a(n) for n = 2993..5985</a> %H A275979 Wikipedia, <a href="http://en.wikipedia.org/wiki/Mersenne_prime">Mersenne prime</a> %F A275979 2^A000043(22) - 1. %e A275979 34608828249085121524296039576741331672262866890023854779048928344500622... %t A275979 First@RealDigits@N[2^9941 - 1, 100] (* _G. C. Greubel_, Aug 15 2016 *) %o A275979 (Magma) Reverse(Intseq(2^9941-1))[1..105]; %o A275979 (PARI) eval(Vec(Str(2^9941-1)))[1..105] %Y A275979 Cf. A169684 = A000668(11), A169681 = A000668(12), A169685 = A000668(13), A204063 = A000668(14), A248931 = A000668(15), A248932 = A000688(16), A248933 = A000668(17), A248934 = A000668(18), A248935 = A000668(19), A248936 = A000668(20), A275977 = A000668(21), A275980 = A000668(23), A275981 = A000668(24), A275982 = A000668(25), A275983 = A000668(26), A275984 = A000668(27). %K A275979 nonn,cons,easy,fini,full %O A275979 2993,1 %A A275979 _Arkadiusz Wesolowski_, Aug 15 2016