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A068747
Number of potential flows in 6 X 6 array with integer velocities in -n..n, i.e., number of 6 X 6 arrays with adjacent elements differing by no more than n, counting arrays differing by a constant only once.
35
1, 12961320464027, 379827509377146575439, 40918963843906494595507077
OFFSET
0,2
CROSSREFS
Cf. 2 X 2 A063496, 3 X 3 A068744, 4 X 4 A068745, 5 X 5 A068746, by velocity limit 1..14 A068748-A068761, solenoidal flows A068722-A068738.
Sequence in context: A172615 A172719 A226954 * A238357 A349028 A160935
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 27 2002
STATUS
approved