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%I #6 Dec 11 2019 23:40:24
%S 0,0,0,1,0,0,0,1,0,0,0,2,0,0,1,1,0,0,0,1,1,0,0,3,0,0,0,1,0,1,0,1,0,0,
%T 1,2,0,0,0,2,0,1,0,1,2,0,0,3,0,0,0,1,0,0,1,2,0,0,0,4,0,0,2,1,0,0,0,1,
%U 0,1,0
%N Number of ways in which n can be the longer leg (middle side) of an integer-sided right triangle.
%F a(n) = A046079(n) - A056138(n) = A046081(n) - A046080(n) - A056138(n).
%Y Cf. A009023, A055523.
%K nonn
%O 1,12
%A _Henry Bottomley_, Jun 15 2000
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