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A172719 Number of 9*n X 18 0..2 arrays with row sums 2 and column sums n 1
12504636144000, 9055359650665478876752602576000, 46455761324619133018320834819622638940550400000000, 571951409844641024133465142141641285731325047530743069428902050000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

R. H. Hardin, Table of n, a(n) for n=1..10

CROSSREFS

Sequence in context: A103575 A172551 A172615 * A226954 A068747 A238357

Adjacent sequences:  A172716 A172717 A172718 * A172720 A172721 A172722

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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Last modified November 26 21:07 EST 2021. Contains 349344 sequences. (Running on oeis4.)