T(n,k)=Number of nXk 0..1 arrays with no element equal to exactly three horizontal or vertical neighbors, with new values 0..1 introduced in row major order.
A240636
T(n,k)=Number of nXk 0..1 arrays with no element equal to exactly three horizontal or vertical neighbors, with new values 0..1 introduced in row major order.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =4a(4) =8a(5) =4a(6) =8a(7) =25a(8) =25a(9) =8a(10) =16a(11) =81a(12) =129a(13) =81a(14) =16a(15) =32a(16) =264a(17) =637a(18) =637a(19) =264a(20) =32a(21) =64a(22) =857a(23) =3147a(24) =4989a(25) =3147a(26) =857a(27) =64a(28) =128a(29) =2785
External references
- oeis: A240636