419648domain: NAppears in sequencesStructured great rhombicubeoctahedral numbers.at n=31A100146Number of (n+2) X (3+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 2 3 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 2 3 6 or 7.at n=17A252527