A172719 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A172719

Number of 9*n X 18 0..2 arrays with row sums 2 and column sums n

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