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 A284568 #5 Apr 12 2017 04:43:19 %S A284568 1,1,1,1,1,1,36,36,576,576,57600,57600,57600,57600,2822400,25401600, %T A284568 25401600,25401600,8230118400,8230118400,3292047360000,3292047360000, %U A284568 398337730560000,398337730560000,14340158300160000,14340158300160000,2423486752727040000,2423486752727040000,1900013614137999360000,1900013614137999360000 %N A284568 a(n) = n! / A284567(n). %H A284568 Antti Karttunen, <a href="/A284568/b284568.txt">Table of n, a(n) for n = 0..120</a> %F A284568 a(n) = A000142(n) / A284567(n) = n! / A284567(n). %o A284568 (Scheme) (define (A284568 n) (/ (A000142 n) (A284567 n))) %Y A284568 Cf. A000142, A284567. %K A284568 nonn %O A284568 0,7 %A A284568 _Antti Karttunen_, Apr 12 2017