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A068728 Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -3 .. 3. 0
1, 7, 925, 3096791, 251611610655, 500885416261650533 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..6.

CROSSREFS

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

Sequence in context: A269932 A252175 A038808 * A028990 A304396 A151579

Adjacent sequences:  A068725 A068726 A068727 * A068729 A068730 A068731

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 26 2002

STATUS

approved

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Last modified July 13 17:54 EDT 2020. Contains 335689 sequences. (Running on oeis4.)