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 A196028 #5 Mar 30 2012 18:57:49 %S A196028 28,20,18,91,56,45,40,190,36,110,84,35,325,60,182,135,112,54,496,90, %T A196028 272,198,80,77,140,703,126,380,273,72,220,104,100,168,506,360,70,143, %U A196028 135,216,650,90,196,459,120,364,170,88,270,812,570,224,209,108,140 %N A196028 Positive integers c for which there is a (5/2)-Pythagorean triple (a,b,c) satisfying a<=b. %C A196028 See A195770 for definitions of k-Pythagorean triple, primitive k-Pythagorean triple, and lists of related sequences. %t A196028 (See A196026.) %Y A196028 Cf. A195770, A196026. %K A196028 nonn %O A196028 1,1 %A A196028 _Clark Kimberling_, Sep 26 2011