Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -7 .. 7.

A068732

Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -7 .. 7.

Terms

    a(0) =1a(1) =15a(2) =19097a(3) =2789847759

External references