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A172566 Number of 3*n X n 0..1 arrays with row sums 6 and column sums 18 1
0, 0, 0, 0, 0, 1, 182509367040000, 712008996110160366168717566400, 7664603814657718197913972357390335773198400000, 299436894513044390420517533660659195248061275496427347927110000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,7

LINKS

R. H. Hardin, Table of n, a(n) for n=1..12

CROSSREFS

Sequence in context: A245721 A320874 A288278 * A214947 A295354 A086439

Adjacent sequences:  A172563 A172564 A172565 * A172567 A172568 A172569

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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Last modified February 17 15:32 EST 2020. Contains 331998 sequences. (Running on oeis4.)