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A172765 Number of 3*n X n 0..3 arrays with row sums 7 and column sums 21 1
0, 0, 352128, 28021865662196736, 82386976561127733213714195200, 6159222400147050126331043386857585651398400, 8076571943273575432916626559495058426486672272842882658769 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

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

CROSSREFS

Sequence in context: A172840 A172886 A172916 * A205632 A205334 A140942

Adjacent sequences:  A172762 A172763 A172764 * A172766 A172767 A172768

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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Last modified April 10 20:30 EDT 2021. Contains 342856 sequences. (Running on oeis4.)