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A172568
Number of 3*n X 9 0..1 arrays with row sums 3 and column sums n
1
1680, 90291600, 12025780892160, 2407147216735338000, 607807501825156719166080, 178355054529362612768336870400, 58142871081888953760431694254592000
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OFFSET
1,1
LINKS
R. H. Hardin,
Table of n, a(n) for n=1..25
CROSSREFS
Sequence in context:
A282402
A156422
A172562
*
A172673
A172768
A172667
Adjacent sequences:
A172565
A172566
A172567
*
A172569
A172570
A172571
KEYWORD
nonn
AUTHOR
R. H. Hardin
Feb 06 2010
STATUS
approved
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Last modified June 12 12:44 EDT 2024. Contains 373331 sequences. (Running on oeis4.)