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 A068485 #15 Aug 08 2020 15:10:16
%S A068485 1,3,7,29,31,42,52,85,143,161,273,330,612,1015,1197,1394,1680,1771,
%T A068485 2262,2698,2717,3318,3424,3641,4551,4700,5617,6468,7192,8184,8858,
%U A068485 8996,9205,9523,9919,10622,11040,11427,11623,15436,17256,17739,18476,18725,19533
%N A068485 One-sixtieth of the even leg of Pythagorean triangles whose other sides are both primes (other than 3, 5 or 13).
%C A068485 The (primitive) Pythagorean triple is {A048161(n), A067755(n), A067756(n)}.
%F A068485 From _Hartmut F. W. Hoft_, Aug 06 2020: (Start)
%F A068485 a(n) = A067755(n+2)/60, n>=1.
%F A068485 a(n) = (A263951(n+2) - 1)/120, n>=1. (End)
%t A068485 a068485[n_] := (Select[Map[Prime[#]^2&, Range[4, n]], PrimeQ[(#+1)/2]&]-1)/120
%t A068485 a068485[250] (* data - _Hartmut F. W. Hoft_, Aug 06 2020 *)
%Y A068485 Cf. A048161, A067755, A067756, A263951.
%K A068485 nonn
%O A068485 1,2
%A A068485 _Lekraj Beedassy_, Mar 11 2002
%E A068485 More terms from _Sascha Kurz_, Mar 26 2002
%E A068485 a(34)-a(45) from _Ray Chandler_, Apr 12 2010