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A068731 Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -6 .. 6. 0
1, 13, 10795, 773568107 (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: A173840 A260457 A219315 * A189309 A203707 A176096

Adjacent sequences:  A068728 A068729 A068730 * A068732 A068733 A068734

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 26 2002

STATUS

approved

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Last modified August 15 16:02 EDT 2020. Contains 336505 sequences. (Running on oeis4.)