A172763 - OEIS

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A172763

Number of 3*n X n 0..3 arrays with row sums 3 and column sums 9.

1, 580, 19546975, 11012437532800, 53461314050652508000, 1482500191777802616831698000, 177485739636656023698217362159890000, 74896615128945574656737417426177604440960000

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

OFFSET

1,2

LINKS

R. H. Hardin, Table of n, a(n) for n=1..23

CROSSREFS

Sequence in context: A186784 A185606 A206616 * A172835 A172883 A260541

Adjacent sequences: A172760 A172761 A172762 * A172764 A172765 A172766

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 06 2010

STATUS

approved