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A172600
Number of 6*n X 18 0..1 arrays with row sums 3 and column sums n
1
137225088000, 229747284991066934931840000, 2767806480542211571651550187279222472704000, 80261625461932627702056015943137363301590520498062576000000
OFFSET
1,1
LINKS
CROSSREFS
Sequence in context: A015402 A108389 A172561 * A172704 A172793 A017542
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 06 2010
STATUS
approved