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 A163406 #6 Jun 02 2025 01:48:32 %S A163406 3,4,5,6,8,10,11,15,17,20,22,24,28,34,36,37,43,47,49,53,59,65,67,70, %T A163406 74,78,80,86,90,96,104,108,110,114,116,120,134,135,139,145,147,157, %U A163406 159,165,171,175,181,187,189,199,201,205,207,219,231,235,237,241,247,249,259 %N A163406 Numbers n which are not in A163405. %Y A163406 Cf. A141468, A163400, A163405. %K A163406 nonn %O A163406 1,1 %A A163406 _Juri-Stepan Gerasimov_, Jul 26 2009, Aug 10 2008 %E A163406 Edited (but not checked) by _N. J. A. Sloane_, Aug 11 2009 %E A163406 70 inserted by _R. J. Mathar_, Oct 10 2009