197568495616domain: NAppears in sequencesDenominators of Pi-independent part of even terms in the probability of obtaining an acute triangle by picking n points at random in the unit n-ball.at n=15A093759G.f.: A(x) = Sum_{n>=0} (2*n+1) * 8^n * x^(n*(n+1)/2).at n=66A111983a(n) = (2n+1)*8^n.at n=11A199301