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A172762 Number of 2*n X n 0..3 arrays with row sums n and column sums 2*n 1
1, 19, 28681, 3017084995, 37642786694586601, 58256290618618126540488181, 11402923087449460426136950157514212457, 300748551220458753215613602117054376767307058363395 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

R. H. Hardin, Table of n, a(n) for n=1..10

CROSSREFS

Sequence in context: A249907 A233105 A013528 * A203703 A068734 A216529

Adjacent sequences:  A172759 A172760 A172761 * A172763 A172764 A172765

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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Last modified March 6 03:34 EST 2021. Contains 341840 sequences. (Running on oeis4.)