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 A259983 #15 Jun 27 2017 15:37:28 %S A259983 2,4,6,7,10,6,6,4,6,10,8,6,6,21,6,18,18,10,10,10,12,12,16,22,14,6,12, %T A259983 21,12,20,10,22,12,20,14,24,24,8,28,6,6,18,28,16,10,6,6,30,24,37,46, %U A259983 14,18,24,18,14,20,10,6,50,20,4,6,12,12,38,12,22,32,6,18 %N A259983 Subsequence of A259981 for bases b in A005381. %C A259983 See A259981 for further information. %H A259983 Chai Wah Wu, <a href="/A259983/b259983.txt">Table of n, a(n) for n = 1..1000</a> %H A259983 R. P. Boas & N. J. A. Sloane, <a href="/A005381/a005381.pdf">Correspondence, 1974</a> %Y A259983 Cf. A259981, A005381. %K A259983 nonn %O A259983 1,1 %A A259983 _N. J. A. Sloane_, Jul 13 2015, following a suggestion from R. P. Boas, May 19, 1974