7441920domain: 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=7A256324Sum of factorial-Catalan numbers over a certain family of decorations.at n=7A289427