T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 1 3 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 1 3 6 or 7.
A252192
T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 1 3 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 1 3 6 or 7.
Terms
- a(0) =945a(1) =1440a(2) =1440a(3) =2055a(4) =1886a(5) =2055a(6) =3341a(7) =2610a(8) =2610a(9) =3341a(10) =5300a(11) =3996a(12) =3705a(13) =3996a(14) =5300a(15) =7973a(16) =6368a(17) =5460a(18) =5460a(19) =6368a(20) =7973a(21) =13044a(22) =9508a(23) =8945a(24) =9233a(25) =8945a(26) =9508a(27) =13044a(28) =21238a(29) =15094
External references
- oeis: A252192