T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no element equal to all horizontal neighbors or equal to all vertical neighbors, and new values 0..2 introduced in row major order.
A238912
T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no element equal to all horizontal neighbors or equal to all vertical neighbors, and new values 0..2 introduced in row major order.
Terms
- a(0) =3a(1) =9a(2) =9a(3) =54a(4) =41a(5) =54a(6) =261a(7) =486a(8) =486a(9) =261a(10) =1341a(11) =4287a(12) =17496a(13) =4287a(14) =1341a(15) =6768a(16) =41165a(17) =408726a(18) =408726a(19) =41165a(20) =6768a(21) =34335a(22) =385632a(23) =10789686a(24) =22778013a(25) =10789686a(26) =385632a(27) =34335a(28) =173925a(29) =3638773
External references
- oeis: A238912