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

A252423

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

Terms

    a(0) =830a(1) =1006a(2) =1006a(3) =1099a(4) =854a(5) =1099a(6) =1536a(7) =1098a(8) =1098a(9) =1536a(10) =2380a(11) =1704a(12) =2348a(13) =1704a(14) =2380a(15) =3719a(16) =3472a(17) =3796a(18) =3796a(19) =3472a(20) =3719a(21) =5725a(22) =7186a(23) =11409a(24) =6834a(25) =11409a(26) =7186a(27) =5725a(28) =9410a(29) =12214

External references