326774domain: NAppears in sequencesEULER transform of 3, 2, 2, 2, 2, 2, 2, 2, ...at n=24A000713Number of (n+2)X(3+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 2 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum equal to 2 3 4 6 or 7.at n=8A252273