Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 3 5 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 3 5 6 or 7.
A252145
Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 3 5 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 3 5 6 or 7.
Terms
- a(0) =14578a(1) =5511a(2) =9443a(3) =8391a(4) =18757a(5) =16958a(6) =44234a(7) =36963a(8) =101771a(9) =83289a(10) =245182a(11) =191088a(12) =595263a(13) =447379a(14) =1472751a(15) =1077415a(16) =3674855a(17) =2624162a(18) =9274947a(19) =6472339a(20) =23552909a(21) =16189347a(22) =60172846a(23) =40822352a(24) =154579992a(25) =103680895a(26) =398494810a(27) =265238393
External references
- oeis: A252145