A068728 Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -3 .. 3.

1, 7, 925, 3096791, 251611610655, 500885416261650533, 24461989414349531084868443, 29358790904767905695470325002387331

Offset

1,2

Links

Table of n, a(n) for n=1..8.

Crossrefs

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

Sequence in context: A352401 A252175 A038808 * A028990 A304396 A151579

Adjacent sequences: A068725 A068726 A068727 * A068729 A068730 A068731

Keyword

nonn,more

Author

R. H. Hardin, Feb 26 2002

Extensions

a(7)-a(8) from Sean A. Irvine, Mar 07 2024

Status

approved