1509040932domain: NAppears in sequencesa(n) is the constant term in the expansion of Product_{k=1..n} (x^k + 1/x^k)^k.at n=8A350283Maximal coefficient of (1 + x) * (1 + x^2)^2 * (1 + x^3)^3 * ... * (1 + x^n)^n.at n=8A369712