References to A171099

a(n) = number of solutions (x,y) (with 0<=x<=y) to x(x+1)/2+y(y+1)/2 = n!.
1, 1, 1, 2, 1, 2, 0, 1, 1, 1, 2, 0, 0, 1, 0, 2, 1, 2, 0, 0, 0, 2, 0, 0, 2, 0, 0, 8, 1, 2, 0, 0, 4, 4

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