Number of nX3 nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any antidiagonal neighbor (colorings ignoring permutations of colors).

A208783

Number of nX3 nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any antidiagonal neighbor (colorings ignoring permutations of colors).

Terms

    a(0) =5a(1) =114a(2) =9089a(3) =1515903a(4) =435411946a(5) =193010377345

External references