Number of (n+2)X(1+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 3 5 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 3 5 6 or 7.

A252377

Number of (n+2)X(1+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 3 5 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 3 5 6 or 7.

Terms

    a(0) =578a(1) =540a(2) =588a(3) =651a(4) =785a(5) =904a(6) =1051a(7) =1290a(8) =1543a(9) =1902a(10) =2392a(11) =2959a(12) =3827a(13) =4965a(14) =6347a(15) =8484a(16) =11355a(17) =14882a(18) =20270a(19) =27738a(20) =36892a(21) =50720a(22) =70283a(23) =94180a(24) =130033a(25) =181321a(26) =243827a(27) =337271a(28) =471676a(29) =635273

External references