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 A235533 #10 Jan 19 2014 00:19:56 %S A235533 15,55,87,95,143,255,303,447,551,735,1007,1295,2103,2407,3495,5447, %T A235533 5727 %N A235533 Positive integers n that cannot be represented as the form of a+b+c or a+b-c where a, b, c are perfect square numbers not larger than n (including 0). %C A235533 No other terms < 10^8. Sequence is probably finite. - _Giovanni Resta_, Jan 16 2014 %Y A235533 Cf. A223731. %K A235533 nonn,more %O A235533 1,1 %A A235533 _Iodizon Aleph_, Jan 11 2014