Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -2 .. 2.

A068727

Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -2 .. 2.

Terms

    a(0) =1a(1) =5a(2) =247a(3) =160403a(4) =1305759171

External references