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 A087937 #18 Jan 25 2020 14:32:29 %S A087937 17,29,37,53,73,101,109,137,173,197,229,241,257,281,293,349,373,397, %T A087937 401,409,449,457,509,577,593,601,641,661,677,701,733,757,809,829,857, %U A087937 877,941,977,997,1021,1033,1049,1061,1093,1153,1181,1193,1229,1237,1277 %N A087937 Prime hypotenuse of primitive Pythagorean triangles with even short leg (or odd long leg). %C A087937 Ordered intersection of A002144 and A081985. %C A087937 These same triangles have the property that sqrt(h+c) = t, where h = a(n), c is the even short leg, t is an integer and the odd long leg is an odd multiple of t, but it appears there are no cases where that multiple is 1, in contrast with the similar property that applies to the triangles of A087937. Also see A008846. - _Richard R. Forberg_, May 11 2016 %H A087937 Ray Chandler, <a href="/A087937/b087937.txt">Table of n, a(n) for n = 1..10000</a> %Y A087937 Cf. A002144, A008846, A081985, A087937. %K A087937 nonn %O A087937 1,1 %A A087937 _Lekraj Beedassy_, Oct 27 2003 %E A087937 More terms from _Ray Chandler_, Oct 28 2003