%I

%S 1,19,49051,23279942261

%N Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -9 .. 9.

%Y By size 3 X 3, ..., 6 X 6 A068722-A068725, by velocity limit 1..13 A068726-A068738.

%K nonn

%O 1,2

%A _R. H. Hardin_, Feb 26 2002