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 A278534 #6 Nov 30 2016 12:59:32 %S A278534 1,2,2,12,6,12,4,180,360,6,12,6,420,180,360,4,36,420,1260,1800,24,120, %T A278534 360,1080,48,48,720,75600,6,12,6,420,180,360,6,60,2310,4620,2520,60, %U A278534 420,1260,2520,120,120,360,83160,5040,720,75600,4,36,420,1260,1800,60,420,1260,2520,180,180,900,12600,360,12600,5400,720,277200,529200,24,120,360,1080,120,120 %N A278534 a(n) = A278236(A219666(n)). %H A278534 Antti Karttunen, <a href="/A278534/b278534.txt">Table of n, a(n) for n = 0..3149</a> %F A278534 a(n) = A278236(A219666(n)). %o A278534 (Scheme) (define (A278534 n) (A278236 (A219666 n))) %Y A278534 Cf. A219666, A230406, A278232, A278236, A278262, A278532. %K A278534 nonn %O A278534 0,2 %A A278534 _Antti Karttunen_, Nov 30 2016