Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -3 .. 3.

A068728

Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -3 .. 3.

Terms

    a(0) =1a(1) =7a(2) =925a(3) =3096791a(4) =251611610655

External references