Number of (2+2)X(n+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.

A252386

Number of (2+2)X(n+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) =540a(1) =555a(2) =647a(3) =771a(4) =1067a(5) =1496a(6) =1928a(7) =2662a(8) =3856a(9) =5074a(10) =7024a(11) =10213a(12) =13505a(13) =18776a(14) =27325a(15) =36221a(16) =50467a(17) =73399a(18) =97476a(19) =135968a(20) =197447a(21) =262661a(22) =366593a(23) =531297a(24) =707931a(25) =988319a(26) =1429275a(27) =1907450a(28) =2663225a(29) =3843093

External references