A172681 - OEIS

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A172681

Number of 4*n X n 0..2 arrays with row sums 5 and column sums 20

0, 0, 34650, 54067759732546560, 3138774474975381117998859525561, 4611389774049135678307206605901825339706084920, 118146008179337031214747923950181684918919939516291368598887900

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

LINKS

R. H. Hardin, Table of n, a(n) for n=1..11

CROSSREFS

Sequence in context: A172672 A172770 A172838 * A251448 A259002 A259009

Adjacent sequences: A172678 A172679 A172680 * A172682 A172683 A172684

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved