T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with nondecreasing maximum minus minimum of every three consecutive values in every row and column.

A250510

T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with nondecreasing maximum minus minimum of every three consecutive values in every row and column.

Terms

    a(0) =19683a(1) =274625a(2) =274625a(3) =3442951a(4) =7615233a(5) =3442951a(6) =37595375a(7) =184021141a(8) =184021141a(9) =37595375a(10) =371694959a(11) =3726466325a(12) =8338442435a(13) =3726466325a(14) =371694959a(15) =3436115229a(16) =66217800903a(17) =305746039533a(18) =305746039533a(19) =66217800903a(20) =3436115229

External references