54609984domain: NAppears in sequencesa(n) = binomial(n+6, 6) * binomial(n+11, n).at n=7A104674a(n) = binomial(n+7,7)*binomial(n+12,7).at n=6A104680a(n) = C(2*n+1,n)*C(2*n+6,n+1).at n=6A113888