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 A155569 #3 Jul 14 2012 11:32:23
%S A155569 0,1,4,6,9,16,22,24,25,33,36,49,54,64,73,81,88,96,97,100,118,121,132,
%T A155569 144,150,166,169,177,193,196,198,214,216,225,241,249,256,262,289,292,
%U A155569 294,297,313,321,324,337,352,358,361,384,388,393,400,409,433,438,441
%N A155569 Intersection of A002479 inter A002481: N = a^2 + 2b^2 = c^2 + 6d^2 for some integers a,b,c,d.
%C A155569 Contains A155709 as a subsequence (obtained by restricting a,b,c,d to be nonzero). Also contains A000290 (squares) as subsequence.
%o A155569 (PARI) isA155569(n,/* use optional 2nd arg to get other analogous sequences */c=[6,2]) = { for(i=1,#c, for(b=0,sqrtint(n\c[i]), issquare(n-c[i]*b^2) & next(2)); return);1}
%o A155569 for( n=0,500, isA155569(n) & print1(n","))
%Y A155569 Cf. A001481, A002479, A003136, A002481, A020668 ff.
%K A155569 easy,nonn
%O A155569 1,3
%A A155569 _M. F. Hasler_, Jan 25 2009