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A172768 Number of 3*n X 9 0..3 arrays with row sums 3 and column sums n 1
1680, 747558000, 772200774683520, 1182802402030354182000, 2275745987915517509338826880, 5078640963785630003833500263433600, 12577849178653907149465594061673565824000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

R. H. Hardin, Table of n, a(n) for n=1..24

CROSSREFS

Sequence in context: A172562 A172568 A172673 * A172667 A221204 A145292

Adjacent sequences:  A172765 A172766 A172767 * A172769 A172770 A172771

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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Last modified April 20 22:22 EDT 2019. Contains 322310 sequences. (Running on oeis4.)