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 A113656 #23 Oct 22 2024 03:21:52 %S A113656 2,3,5,7,1,3,1,7,1,9,3,1,6,1,8,9,1,0,7,1,2,7,5,2,1,6,0,7,1,2,7,9,2,2, %T A113656 0,3,2,2,8,1,3,2,1,7,4,2,5,3,4,4,2,3,9,6,8,9,9,9,4,1,1,1,2,1,3,1,9,9, %U A113656 3,7,2,1,7,0,1,2,3,2,0,9,4,4,4,9,7,8,6,2,4,3,1,1,0,5,0,3,1,3,2 %N A113656 Digits of successive exponents of Mersenne primes (see A000043). %H A113656 Amiram Eldar, <a href="/A113656/b113656.txt">Table of n, a(n) for n = 1..235</a> (terms 1..187 from Bill McEachen, terms 188..227 from Gord Palameta) %t A113656 Flatten[IntegerDigits/@MersennePrimeExponent[Range[30]]] (* _Harvey P. Dale_, Aug 05 2021 *) %Y A113656 Cf. A000043. %K A113656 nonn,base %O A113656 1,1 %A A113656 _N. J. A. Sloane_, following a suggestion of _Bill McEachen_, Jan 18 2006