T(n,k) = Number of (n+2) X (k+2) 0..3 arrays with every 3 X 3 subblock row and column sum 1 3 6 or 8 and every diagonal and antidiagonal sum not 1 3 6 or 8.
A252015
T(n,k) = Number of (n+2) X (k+2) 0..3 arrays with every 3 X 3 subblock row and column sum 1 3 6 or 8 and every diagonal and antidiagonal sum not 1 3 6 or 8.
Terms
- a(0) =756a(1) =1168a(2) =1168a(3) =1110a(4) =1602a(5) =1110a(6) =1618a(7) =1406a(8) =1406a(9) =1618a(10) =1970a(11) =2002a(12) =1434a(13) =2002a(14) =1970a(15) =2458a(16) =3128a(17) =2170a(18) =2170a(19) =3128a(20) =2458a(21) =3246a(22) =4570a(23) =4770a(24) =3814a(25) =4770a(26) =4570a(27) =3246a(28) =4410a(29) =6562
External references
- oeis: A252015