T(n,k)=Number of nXk 0..2 arrays x(i,j) with each element horizontally, vertically, diagonally or antidiagonally next to at least one element with value 2-x(i,j).

A230176

T(n,k)=Number of nXk 0..2 arrays x(i,j) with each element horizontally, vertically, diagonally or antidiagonally next to at least one element with value 2-x(i,j).

Terms

    a(0) =0a(1) =3a(2) =3a(3) =3a(4) =27a(5) =3a(6) =9a(7) =193a(8) =193a(9) =9a(10) =15a(11) =1407a(12) =3787a(13) =1407a(14) =15a(15) =33a(16) =10211a(17) =78849a(18) =78849a(19) =10211a(20) =33a(21) =63a(22) =73417a(23) =1637019a(24) =4722977a(25) =1637019a(26) =73417a(27) =63a(28) =129a(29) =530771

External references