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A172572 Number of 3*n X 6 0..1 arrays with row sums 2 and column sums n 1
90, 67950, 90291600, 154700988750, 306407299538340, 666569141498660400, 1548539246648239560000, 3776577900841430197548750, 9561215418596022668009737500, 24935177268489106332174087326700 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

R. H. Hardin, Table of n, a(n) for n=1..33

CROSSREFS

Sequence in context: A134648 A145413 A279442 * A052277 A172671 A066784

Adjacent sequences:  A172569 A172570 A172571 * A172573 A172574 A172575

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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Last modified March 21 20:25 EDT 2019. Contains 321382 sequences. (Running on oeis4.)