%I #10 Mar 08 2024 07:54:53
%S 1,5,247,160403,1305759171,134771061592765,176541437214450498265,
%T 2940055615889904390546839103,623112842926151670996790416231139397
%N Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -2 .. 2.
%Y By size 3 X 3, ..., 6 X 6 A068722-A068725, by velocity limit 1..13 A068726-A068738.
%K nonn,more
%O 1,2
%A _R. H. Hardin_, Feb 26 2002
%E a(9) from _Sean A. Irvine_, Mar 08 2024