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A172673 Number of 3*n X 9 0..2 arrays with row sums 3 and column sums n 1
1680, 747558000, 655551508577280, 853588467101915622000, 1392491976667637592480814080, 2631822682451717147804985743769600, 5516710929099784554483904755922151424000 (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: A156422 A172562 A172568 * A172768 A172667 A221204

Adjacent sequences:  A172670 A172671 A172672 * A172674 A172675 A172676

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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Last modified March 26 00:45 EDT 2019. Contains 321479 sequences. (Running on oeis4.)