147444domain: NAppears in sequencesAntidiagonal sums of triangle A099602, in which row n equals the inverse binomial transform of column n of the triangle of trinomial coefficients (A027907).at n=21A099604a(n) = 144*n^2 - 12.at n=31A158543a(n) = 3*a(n-1) - 2*a(n-2) with a(0)=24 and a(1)=60.at n=12A182464