T(n,k) = Number of n X k 0..4 arrays with values 0..4 introduced in row major order and each element equal to at least one horizontal or vertical neighbor.
A198708
T(n,k) = Number of n X k 0..4 arrays with values 0..4 introduced in row major order and each element equal to at least one horizontal or vertical neighbor.
Terms
- a(0) =0a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =2a(7) =14a(8) =14a(9) =2a(10) =3a(11) =76a(12) =185a(13) =76a(14) =3a(15) =6a(16) =488a(17) =3893a(18) =3893a(19) =488a(20) =6a(21) =11a(22) =3508a(23) =95209a(24) =322230a(25) =95209a(26) =3508a(27) =11a(28) =23a(29) =27422
External references
- oeis: A198708