T(n,k)=Number of nXk arrays containing k copies of 0..n-1 with every element equal to at least one horizontal neighbor and the top left element equal to 0.

A267724

T(n,k)=Number of nXk arrays containing k copies of 0..n-1 with every element equal to at least one horizontal neighbor and the top left element equal to 0.

Terms

    a(0) =0a(1) =1a(2) =0a(3) =1a(4) =1a(5) =0a(6) =1a(7) =1a(8) =2a(9) =0a(10) =1a(11) =3a(12) =2a(13) =6a(14) =0a(15) =1a(16) =5a(17) =30a(18) =6a(19) =24a(20) =0a(21) =1a(22) =12a(23) =58a(24) =630a(25) =24a(26) =120a(27) =0a(28) =1a(29) =26

External references