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 A138868 #5 Mar 14 2020 05:57:03 %S A138868 2,4,16,64,96,36,44,24,76,56,64,64,76,64,44,4,76,36,96,4,56,76,96,36, %T A138868 76,56,36,4,4,56,24,44,96,64,56,76,36,96,36,24,4,24,36,36,64,76,56 %N A138868 Last two digits of n-th even superperfect number A061652(n). %C A138868 Also, last two digits of n-th superperfect number A019279(n), if there are no odd superperfect numbers. %Y A138868 Cf. A019279, A061652, A138867, A138869, A138870, A138874. %K A138868 nonn,base,more %O A138868 1,1 %A A138868 _Omar E. Pol_, Apr 02 2008 %E A138868 More terms from _Jinyuan Wang_, Mar 14 2020