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 A276604 #5 Sep 12 2016 17:02:54 %S A276604 0,2,2,4,2,2,4,4,6,2,2,4,4,4,4,6,4,6,6,4,8,2,2,4,4,4,4,6,4,6,6,4,8,6, %T A276604 4,8,8,4,6,6,4,8,6,4,6,8,4,8,8,10,2,2,4,4,4,4,6,4,6,6,4,8,6,4,8,8,4,6, %U A276604 6,4,8,6,4,6,8,4,8,8,10,6,4,6,8,4,8,8,10,8,8,10,4,6,6,4,8,6,4,6,8,4,8,8,10,6,4,6,8,4,8,8,8,8,8,10 %N A276604 After a(0)=0, the first differences of A276623. %H A276604 Antti Karttunen, <a href="/A276604/b276604.txt">Table of n, a(n) for n = 0..6250</a> %F A276604 a(n) = A053735(A276623(n)). %F A276604 a(0) = 0; for n >= 1, a(n) = A276623(n) - A276623(n-1). %o A276604 (Scheme, two alternatives) %o A276604 (define (A276604 n) (A053735 (A276623 n))) %o A276604 (define (A276604 n) (if (zero? n) n (- (A276623 n) (A276623 (- n 1))))) %Y A276604 Cf. A053735, A276623, A276605 (terms divided by 2). %K A276604 nonn,base %O A276604 0,2 %A A276604 _Antti Karttunen_, Sep 11 2016