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A172908 Number of 2*n X n 0..6 arrays with row sums 6 and column sums 12 1
1, 231, 4645936, 2503134855620, 18123941520898218600, 1125711921752126203903372141, 436763455430178705879474096982721048, 835840537229783152562450810757651648205244120 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

R. H. Hardin, Table of n, a(n) for n=1..15

CROSSREFS

Sequence in context: A068750 A225997 A172898 * A172935 A319306 A280538

Adjacent sequences:  A172905 A172906 A172907 * A172909 A172910 A172911

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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Last modified August 8 17:55 EDT 2022. Contains 356016 sequences. (Running on oeis4.)