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 A246263 #8 Aug 22 2014 16:49:21 %S A246263 2,5,6,7,8,15,17,18,19,20,21,22,24,26,28,29,32,41,43,45,46,50,51,53, %T A246263 54,55,57,60,61,62,63,65,66,67,68,70,72,73,74,76,77,78,79,80,84,87,88, %U A246263 91,94,96,98,101,103,104,112,113,115,116,118,123,125,127,128,129,135,137,138,142,149,150 %N A246263 Numbers n such that A003961(n) is of the form 4k+3. %C A246263 Equally: numbers n for which A048673(n) is even. %C A246263 Also, after the first term (2), numbers n for which A243062(n) is odd. %C A246263 Numbers that occur below the topmost row of square array A246259. %H A246263 Antti Karttunen, <a href="/A246263/b246263.txt">Table of n, a(n) for n = 1..10001</a> %o A246263 (Scheme, with _Antti Karttunen_'s IntSeq-library) %o A246263 (define A246263 (MATCHING-POS 1 1 (lambda (n) (= 3 (modulo (A003961 n) 4))))) %Y A246263 Complement: A246261. %Y A246263 Positions of nonzeros in A246271. %Y A246263 Inverse function: A246264. %Y A246263 Cf. A003961, A048673, A246259, A243062, A246267. %K A246263 nonn %O A246263 1,1 %A A246263 _Antti Karttunen_, Aug 21 2014