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A172811 Number of n X n 0..4 arrays with row sums 6 and column sums 6 1
0, 3, 217, 91140, 128843140, 511508441781, 4960069104562005, 105468145309870490840, 4512934309457492170923216, 362415672451851793780617637200, 51563823623409518633102950412670240 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

R. H. Hardin, Table of n, a(n) for n=1..25

CROSSREFS

Sequence in context: A225239 A225362 A063836 * A247070 A140441 A261385

Adjacent sequences:  A172808 A172809 A172810 * A172812 A172813 A172814

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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Last modified June 20 23:38 EDT 2021. Contains 345314 sequences. (Running on oeis4.)