A172647 - OEIS

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A172647

Number of 2*n X n 0..2 arrays with row sums 6 and column sums 12

0, 0, 1, 1093050, 31237467004800, 5520471267708881730181, 5001985846592510105642103476685, 19578536057961112914067888563728861113920

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,4

LINKS

R. H. Hardin, Table of n, a(n) for n=1..15

CROSSREFS

Sequence in context: A252119 A109148 A077647 * A172754 A268036 A184384

Adjacent sequences: A172644 A172645 A172646 * A172648 A172649 A172650

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved