T(n,k)=Number of nXk 0..1 arrays with no element equal to more than two of its horizontal, diagonal or antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.
A281469
T(n,k)=Number of nXk 0..1 arrays with no element equal to more than two of its horizontal, diagonal or antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =4a(4) =8a(5) =4a(6) =8a(7) =17a(8) =25a(9) =8a(10) =16a(11) =37a(12) =24a(13) =81a(14) =16a(15) =32a(16) =78a(17) =39a(18) =60a(19) =264a(20) =32a(21) =64a(22) =169a(23) =57a(24) =96a(25) =133a(26) =857a(27) =64a(28) =128a(29) =361
External references
- oeis: A281469