Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -6 .. 6.

A068731

Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -6 .. 6.

Terms

    a(0) =1a(1) =13a(2) =10795a(3) =773568107

External references