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A068753
Number of potential flows in n X n array with integer velocities in -6..6, i.e., number of n X n arrays with adjacent elements differing by no more than 6, counting arrays differing by a constant only once.
0
1, 1469, 172989921, 1678843050246451, 1354915464537160758459123
OFFSET
1,2
CROSSREFS
By size 3 X 3, ..., 6 X 6 A068744-A068747, by velocity limit 1..14 A068248-A068761, solenoidal flows A068722-A068738.
Sequence in context: A204871 A252578 A083526 * A255735 A252521 A237379
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 27 2002
STATUS
approved