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 A118961 #7 Nov 24 2019 13:13:42 %S A118961 1,1,2,1,8,2,1,8,1,9,2,18,8,1,9,25,2,18,1,8,32,2,1,9,25,49,8,1,32,9, %T A118961 25,2,49,18,50,1,8,25,32,2,18,1,9,25,50,49,8,81,32,1,9,72,2,49,50,81, %U A118961 8,1,98,32,25,49,72,2,18,1,121,9,25,49,8,98,32,81,121,1,9,2,25,18,128,49,50 %N A118961 Difference between long leg and hypotenuse in primitive Pythagorean triangles, sorted on hypotenuse (A020882), then on long leg (A046087). %C A118961 Entries take only values appearing in A096033. %H A118961 Ray Chandler, <a href="/A118961/b118961.txt">Table of n, a(n) for n = 1..10000</a> %F A118961 a(n) = A020882(n) - A046087(n) = A118962(n) - A120682(n). - _Ray Chandler_, Nov 24 2019 %Y A118961 Cf. A118962, A020882, A046087, A096033, A120682. %K A118961 nonn %O A118961 1,3 %A A118961 _Lekraj Beedassy_, May 07 2006 %E A118961 More terms from _Joshua Zucker_, May 11 2006