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A172893 Number of n X n 0..6 arrays with row sums 9 and column sums 9 1
0, 4, 811, 1624984, 17046289085, 747054974484580, 114730784954807798280, 53679014250694594378460480, 68263787608482538080643047338467, 214735064836225772744899504151062116600 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

R. H. Hardin, Table of n, a(n) for n=1..15

CROSSREFS

Sequence in context: A114766 A239623 A202685 * A072725 A176186 A221232

Adjacent sequences:  A172890 A172891 A172892 * A172894 A172895 A172896

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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Last modified August 15 20:49 EDT 2018. Contains 313779 sequences. (Running on oeis4.)