T(n,k)=Number of nXk 0..3 arrays with exactly floor(nXk/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
A223052
T(n,k)=Number of nXk 0..3 arrays with exactly floor(nXk/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =0a(4) =4a(5) =0a(6) =6a(7) =44a(8) =32a(9) =0a(10) =20a(11) =508a(12) =1682a(13) =613a(14) =0a(15) =20a(16) =6918a(17) =95648a(18) =101573a(19) =7152a(20) =0a(21) =70a(22) =93770a(23) =3760845a(24) =17704612a(25) =4505726a(26) =117140a(27) =0a(28) =685a(29) =1302140
External references
- oeis: A223052