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 A278531 #5 Nov 30 2016 12:59:11 %S A278531 1,2,4,2,8,4,6,2,16,8,12,4,12,6,6,2,32,16,24,8,36,12,12,4,24,12,30,6, %T A278531 12,6,6,2,64,32,48,16,72,24,24,8,72,36,60,12,36,12,12,4,48,24,60,12, %U A278531 60,30,30,6,24,12,30,6,12,6,6,2,128,64,96,32,144,48,48,16,216,72,120,24,72,24,24,8,144,72,180,36,180,60,60,12,72,36,60,12,36,12,12,4 %N A278531 a(n) = A046523(A163511(n)). %H A278531 Antti Karttunen, <a href="/A278531/b278531.txt">Table of n, a(n) for n = 0..8191</a> %F A278531 a(n) = A046523(A163511(n)). %F A278531 a(n) = A278222(A054429(n)). %o A278531 (Scheme) (define (A278531 n) (A046523 (A163511 n))) %Y A278531 Cf. A046523, A054429, A163511, A278222, A278533, A278535. %K A278531 nonn %O A278531 0,2 %A A278531 _Antti Karttunen_, Nov 30 2016