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 A087938 #27 Jun 05 2022 14:48:02 %S A087938 5,13,41,61,89,97,113,149,157,181,193,233,269,277,313,317,337,353,389, %T A087938 421,433,461,521,541,557,569,613,617,653,673,709,761,769,773,797,821, %U A087938 853,881,929,937,953,1009,1013,1069,1097,1109,1117,1129,1201,1213,1217 %N A087938 Prime hypotenuse of primitive Pythagorean triangles with odd short leg (or even long leg). %C A087938 Ordered intersection of A002144 and A081961. %C A087938 These same triangles have the property that sqrt(h+b) = t, where h = a(n), b is the even long leg, t is an odd integer, and the odd short leg is an odd multiple of t, including some instances where that multiple is 1 (i.e., t equals the short leg). A similar property applies to the triangles of A087937. Also see A008846. - _Richard R. Forberg_, May 11 2016 %H A087938 Ray Chandler, <a href="/A087938/b087938.txt">Table of n, a(n) for n = 1..10000</a> %Y A087938 Cf. A002144, A008846, A081961, A087937. %K A087938 nonn %O A087938 1,1 %A A087938 _Lekraj Beedassy_, Oct 27 2003 %E A087938 Corrected and extended by _Ray Chandler_, Oct 28 2003