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 A276947 #5 Sep 22 2016 21:28:07 %S A276947 1,1,2,1,1,1,1,1,1,2,1,1,2,2,1,1,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, %T A276947 1,1,1,1,1,1,1,2,1,1,2,1,1,1,1,1,1,2,1,1,2,2,1,1,2,2,1,1,2,1,1,1,1,1, %U A276947 1,2,1,1,2,2,1,1,2,2,1,1,2,1,1,1,1,1,1,2,1,1,2,2,1,1,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 %N A276947 First differences of A256450: a(n) = A256450(n) - A256450(n-1). %H A276947 Antti Karttunen, <a href="/A276947/b276947.txt">Table of n, a(n) for n = 1..5040</a> %H A276947 <a href="/index/Fa#facbase">Index entries for sequences related to factorial base representation</a> %F A276947 a(n) = A256450(n) - A256450(n-1). [Note that the indexing of A256450 begins from zero.] %o A276947 (Scheme) (define (A276947 n) (- (A256450 n) (A256450 (- n 1)))) %Y A276947 Cf. A256450. %Y A276947 Cf. also A276948, A257682, A257681. %K A276947 nonn,base %O A276947 1,3 %A A276947 _Antti Karttunen_, Sep 22 2016