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A068737
Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -12 .. 12.
0
1, 25, 146797, 274074872265, 156588834507399529975
OFFSET
1,2
CROSSREFS
By size 3 X 3, ..., 6 X 6 A068722-A068725, by velocity limit 1..13 A068726-A068738.
Sequence in context: A076445 A013835 A211600 * A151649 A122500 A347812
KEYWORD
nonn,more
AUTHOR
R. H. Hardin, Feb 26 2002
EXTENSIONS
a(5) from Sean A. Irvine, Mar 10 2024
STATUS
approved