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 A196115 #5 Mar 30 2012 18:57:49 %S A196115 3,5,7,8,9,11,11,13,13,15,16,17,17,19,19,21,21,21,23,23,24,25,27,27, %T A196115 29,31,32,33,33,37,39,39,40,40,41,43,47,48,48,49,51,51,53,56,56,56,57, %U A196115 57,59,61,63,64,69,72,72,75,87,88,88,93,96,96,104,104,105,111,112 %N A196115 Positive integers a for which there is a primitive 3-Pythagorean triple (a,b,c) satisfying a<=b. %C A196115 See A195770 for definitions of k-Pythagorean triple, primitive k-Pythagorean triple, and lists of related sequences. %e A196115 Primitive 3-Pythagorean triples a,b,c; %e A196115 c^2=a^2+b^2+k*a*b, where k=3: %e A196115 3,7,11 %e A196115 5,24,31 %e A196115 7,51,61 %e A196115 8,9,19 %e A196115 9,88,101 %e A196115 11,15,29 %e A196115 11,135,151 %e A196115 13,24,41 %e A196115 13, 192,211 %e A196115 15,259,281 %t A196115 (See A196112.) %Y A196115 Cf. A195770, A196112, A196116, A196117. %K A196115 nonn %O A196115 1,1 %A A196115 _Clark Kimberling_, Sep 28 2011