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 A218599 #10 Jun 23 2025 22:17:46 %S A218599 0,0,0,1,0,2,1,0,4,3,2,1,0,8,7,6,5,4,3,2,1,0,16,15,14,13,12,11,10,9,8, %T A218599 7,6,5,4,3,2,1,0,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13, %U A218599 12,11,10,9,8,7,6,5,4,3,2,1,0 %N A218599 After the first zero, integers from A213709(n)-1 to 0 followed by integers from A213709(n+1)-1 to 0, etc. %H A218599 Antti Karttunen, <a href="/A218599/b218599.txt">Table of n, a(n) for n = 0..8727</a> %F A218599 a(n) = A218600(A213711(n))-n. %o A218599 (Scheme) (define (A218599 n) (- (A218600 (A213711 n)) n)) %Y A218599 Cf. A218601. %K A218599 nonn %O A218599 0,6 %A A218599 _Antti Karttunen_, Nov 10 2012