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A172835 Number of 3*n X n 0..4 arrays with row sums 5 and column sums 15 1
0, 580, 2332105236, 419542137630783552, 1775125806066054844658927631, 107592348627283647736871768193003754560, 64299439861739255917710165174342650682005907347040 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

R. H. Hardin, Table of n, a(n) for n=1..13

CROSSREFS

Sequence in context: A185606 A206616 A172763 * A172883 A260541 A162705

Adjacent sequences:  A172832 A172833 A172834 * A172836 A172837 A172838

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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Last modified November 27 07:28 EST 2021. Contains 349365 sequences. (Running on oeis4.)