A065709 - cp's OEIS frontend

A065709 Reduced sequence related to reciprocal Pythagorean triples: 1/a(n)^2 + 1/k^2 = 1/j^2 has an integer solution (k,j) with k and a(n) not a multiple of 20.

%I A065709 #7 Sep 09 2023 23:19:43
%S A065709 156,255,312,468,510,609,624,765,936,1092,1218,1248,1275,1295,1404,
%T A065709 1530,1716,1785,1827,1872,2028,2184,2295,2385,2436,2496,2550,2590,
%U A065709 2652,2805,2808,2964,3045,3276,3315,3432,3570,3588,3654,3744,3825,3885,4015,4056,4095
%N A065709 Reduced sequence related to reciprocal Pythagorean triples: 1/a(n)^2 + 1/k^2 = 1/j^2 has an integer solution (k,j) with k<a(n) and a(n) not a multiple of 20.
%e A065709 a(10)=1218: 1/a(10)^2 + 1/1160^2 = 1/840^2
%Y A065709 A065607 (includes multiples of 20)
%K A065709 nonn
%O A065709 1,1
%A A065709 _Len Smiley_, Dec 04 2001
%E A065709 Offset corrected and more terms from _Sean A. Irvine_, Sep 09 2023

cp's OEIS Frontend

A065709 Reduced sequence related to reciprocal Pythagorean triples: 1/a(n)^2 + 1/k^2 = 1/j^2 has an integer solution (k,j) with k and a(n) not a multiple of 20.