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 A269390 #6 Mar 07 2016 12:29:37 %S A269390 3,5,6,9,10,11,13,14,17,18,19,20,22,23,25,26,27,29,30,33,34,35,36,37, %T A269390 39,40,41,43,44,45,47,48,50,51,52,54,55,57,58,59,61,62,65,66,67,68,69, %U A269390 70,72,73,74,76,77,78,80,81,83,84,85,86,88,89,91,92,93,95,96,98,99,100,101,103,104,105,107,108,109,111 %N A269390 Complement of A233271. %H A269390 Antti Karttunen, <a href="/A269390/b269390.txt">Table of n, a(n) for n = 1..13890</a> %o A269390 (Scheme, with _Antti Karttunen_'s IntSeq-library) %o A269390 (define A269390 (ZERO-POS 1 1 (lambda (n) (- (A269381 n) (A269381 (- n 1)))))) %Y A269390 Cf. A233271 (complement). %Y A269390 Cf. A269381. %Y A269390 Cf. also A213713, A269391, A269392. %K A269390 nonn,base %O A269390 1,1 %A A269390 _Antti Karttunen_, Mar 05 2016