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A172663 Number of 3*n X n 0..2 arrays with row sums 6 and column sums 18 1
0, 0, 1, 6152037276, 2630024635942177123650, 16157198427400511406055803977773761, 1126052188643363954802820836947166068046894450600 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,4
LINKS
CROSSREFS
Sequence in context: A046894 A145552 A290502 * A210727 A004675 A011524
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 06 2010
STATUS
approved

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Last modified April 12 19:05 EDT 2024. Contains 371636 sequences. (Running on oeis4.)