2099160domain: NAppears in sequencesa(n) = denominator of (1/n^3)*(-1/(n+1) + 16/(n+2) + 3/(4*(2*n+1)) - 81/(4*(2*n+3))), term of a BBP-type series representation of zeta(3) by V. Adamchik and S. Wagon.at n=6A256324a(n) = (3*n + 7)*Pochhammer(n, 5) / 4!.at n=14A293608