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A172884 Number of 3*n X n 0..5 arrays with row sums 5 and column sums 15 1
1, 4332, 7020205512, 822065583733092864, 2756256275031328927730303391, 145638518631283768165426487679968270016, 79865167852275876121290622323639890979486114456768 (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: A300359 A299704 A298431 * A172915 A317046 A259961

Adjacent sequences: A172881 A172882 A172883 * A172885 A172886 A172887

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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Last modified February 4 22:05 EST 2023. Contains 360082 sequences. (Running on oeis4.)