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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..4.

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 A251362

Adjacent sequences:  A068734 A068735 A068736 * A068738 A068739 A068740

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 26 2002

STATUS

approved

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Last modified January 24 16:47 EST 2020. Contains 331209 sequences. (Running on oeis4.)