T(n,k)=Number of 0..k arrays of length n with each element unequal to at least one neighbor, with new values introduced in 0..k order.

A221459

T(n,k)=Number of 0..k arrays of length n with each element unequal to at least one neighbor, with new values introduced in 0..k order.

Terms

    a(0) =0a(1) =0a(2) =1a(3) =0a(4) =1a(5) =1a(6) =0a(7) =1a(8) =2a(9) =2a(10) =0a(11) =1a(12) =2a(13) =6a(14) =3a(15) =0a(16) =1a(17) =2a(18) =7a(19) =16a(20) =5a(21) =0a(22) =1a(23) =2a(24) =7a(25) =24a(26) =44a(27) =8a(28) =0a(29) =1

External references