7780827681domain: NAppears in sequencesa(n) = (12*n + 9)^4.at n=24A017632Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum.at n=5A256763Number of (n+2)X(6+2) 0..1 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum.at n=5A256769