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A172883 Number of 3*n X n 0..5 arrays with row sums 7 and column sums 21 1
0, 580, 61236085104, 889348003628262655840, 747407928835934560435386462917600, 20140279098377603754458043886598358319686833280 (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: A206616 A172763 A172835 * A260541 A162705 A244344

Adjacent sequences:  A172880 A172881 A172882 * A172884 A172885 A172886

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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Last modified September 24 07:42 EDT 2021. Contains 347623 sequences. (Running on oeis4.)