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A172556 Number of 2*n X 6 0..1 arrays with row sums 3 and column sums n 1
20, 1860, 297200, 60871300, 14367744720, 3718394156400, 1026608414145600, 297348703692826500, 89365729945562642000, 27658131940039664137360, 8766913970029589057611200, 2834492178580299130305958000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

R. H. Hardin, Table of n, a(n) for n=1..49

CROSSREFS

Sequence in context: A177297 A014606 A330196 * A246619 A222973 A267575

Adjacent sequences:  A172553 A172554 A172555 * A172557 A172558 A172559

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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Last modified August 8 14:04 EDT 2020. Contains 336298 sequences. (Running on oeis4.)