T(n,k)=Number of nXk 0..6 arrays with values 0..6 introduced in row major order and each element equal to at least one horizontal or vertical neighbor.

A198654

T(n,k)=Number of nXk 0..6 arrays with values 0..6 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) =3904a(18) =3904a(19) =488a(20) =6a(21) =11a(22) =3521a(23) =98467a(24) =344008a(25) =98467a(26) =3521a(27) =11a(28) =23a(29) =28030

External references