T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 or 1 and no antidiagonal sum 0 or 1 and no row sum 0 and no column sum 0.
A254978
T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 or 1 and no antidiagonal sum 0 or 1 and no row sum 0 and no column sum 0.
Terms
- a(0) =121a(1) =310a(2) =310a(3) =1008a(4) =1282a(5) =1008a(6) =3241a(7) =6915a(8) =6915a(9) =3241a(10) =9961a(11) =27211a(12) =49040a(13) =27211a(14) =9961a(15) =30529a(16) =116534a(17) =260705a(18) =260705a(19) =116534a(20) =30529a(21) =94351a(22) =518534a(23) =1592767a(24) =1892418a(25) =1592767a(26) =518534a(27) =94351a(28) =292130a(29) =2243657
External references
- oeis: A254978