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 A196257 #5 Mar 30 2012 18:57:49 %S A196257 7,86,16,56,26,124,581,71,199,557,34,169,166,233,49,136,674,301,59, %T A196257 221,86,749,104,227,476,73,607,119,334,91,691,166,214,457,251,221,346, %U A196257 127,181,881,124,833,284,364,767,419,197,434,554,269,521,283,191 %N A196257 Positive integers c for which there is a primitive (3/4)-Pythagorean triple (a,b,c) satisfying a<=b. %C A196257 See A195770 for definitions of k-Pythagorean triple, primitive k-Pythagorean triple, and lists of related sequences. %t A196257 (See A196252.) %Y A196257 Cf. A195770, A196252, A196255, A196256. %K A196257 nonn %O A196257 1,1 %A A196257 _Clark Kimberling_, Sep 30 2011