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 A275849 #9 Aug 17 2016 22:18:30 %S A275849 0,0,1,0,1,1,2,1,1,0,1,1,2,1,2,1,1,1,2,2,1,1,2,2,3,2,2,1,2,2,2,1,1,0, %T A275849 1,1,2,1,2,1,1,1,2,2,1,1,2,2,3,2,2,1,2,2,3,2,2,1,2,2,2,1,2,1,1,1,2,2, %U A275849 1,1,2,2,3,2,3,2,2,2,2,1,2,1,1,1,3,2,3,2,2,2,2,2,2,2,2,2,3,3,2,2,3,3,2,2,1,1,2,2,2,2,2,2,2,2,3,3,2,2,3,3,4 %N A275849 Number of unoccupied slopes in factorial base representation of n: a(n) = A084558(n) - A060502(n). %H A275849 Antti Karttunen, <a href="/A275849/b275849.txt">Table of n, a(n) for n = 0..40320</a> %H A275849 <a href="/index/Fa#facbase">Index entries for sequences related to factorial base representation</a> %F A275849 a(n) = A084558(n) - A060502(n). %F A275849 Other identities. For all n >= 0: %F A275849 a(n) = A275850(A225901(n)). %F A275849 a(n) = A060501(n)-1. [To be proved.] %o A275849 (Scheme) (define (A275849 n) (- (A084558 n) (A060502 n))) %Y A275849 Cf. A060501, A060502, A084558. %Y A275849 Cf. A007489 (the indices of zeros). %Y A275849 Cf. also A225901, A275850, A275851, A275853. %K A275849 nonn,base %O A275849 0,7 %A A275849 _Antti Karttunen_, Aug 15 2016