T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 2 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 2 3 4 6 or 7.

A252167

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 2 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 2 3 4 6 or 7.

Terms

    a(0) =2581a(1) =3712a(2) =3712a(3) =5025a(4) =1930a(5) =5025a(6) =7570a(7) =1574a(8) =1574a(9) =7570a(10) =12522a(11) =2075a(12) =2264a(13) =2075a(14) =12522a(15) =21186a(16) =3749a(17) =3925a(18) =3925a(19) =3749a(20) =21186a(21) =37337a(22) =6883a(23) =9178a(24) =9058a(25) =9178a(26) =6883a(27) =37337a(28) =68096a(29) =12842

External references