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A001500
Number of stochastic matrices of integers: n X n arrays of nonnegative integers with all row and column sums equal to 3.
(Formerly M3689 N1507)
+0
2
1, 1, 4, 55, 2008, 153040, 20933840, 4662857360, 1579060246400, 772200774683520, 523853880779443200, 477360556805016931200, 569060910292172349004800, 868071731152923490921728000
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.
AT&T Labs Research
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