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 A278540 #5 Nov 30 2016 12:59:43 %S A278540 1,2,4,2,2,8,2,6,16,6,2,12,2,6,12,4,2,32,2,6,12,6,2,24,4,6,64,6,2,24, %T A278540 2,12,12,6,6,48,2,6,12,30,2,24,2,6,48,6,2,36,4,12,12,6,2,128,6,30,12, %U A278540 6,2,60,2,6,48,8,6,24,2,6,12,30,2,96,2,6,36,6,6,24,2,12,256,6,2,60,6,6,12,30,2,96,6,6,12,6,6,72,2,12,48,12,2,24,2,30,60,6 %N A278540 a(n) = A046523(A235201(n)). %H A278540 Antti Karttunen, <a href="/A278540/b278540.txt">Table of n, a(n) for n = 1..10000</a> %F A278540 a(n) = A046523(A235201(n)). %o A278540 (Scheme) (define (A278540 n) (A046523 (A235201 n))) %Y A278540 Cf. A046523, A235201, A278541, A278542. %K A278540 nonn %O A278540 1,2 %A A278540 _Antti Karttunen_, Nov 30 2016