%I #2 Mar 30 2012 17:27:05
%S 0,4,20,24,60,116,120,136,140,260,340,360,444,676,696,700,816,1040,
%T 1476,2020,2220,2280,2684,3480,3940,4056,4060,4080,4420,4756,5516,
%U 6100,6120,6460,6780,8224,8840,8976,9860,11700,13756,16040,18564,21340,22964
%N Nonnegative integers m such that m^2 = (a^2-1)*(b^2+1) for some integers a,b.
%C m belongs to this sequence iff m^2 belongs to A174133.
%C All terms are multiples of 4.
%K nonn
%O 1,2
%A _Max Alekseyev_, Apr 01 2010