Number of 3 X 3 symmetric stochastic matrices under row and column permutations.
1, 1, 2, 4, 6, 8, 12, 16, 21, 27, 34, 42, 52, 62, 74, 88, 103, 119, 138, 158, 180, 204
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Fri Dec 26 23:06:26 CET 2008 [seqfan] Some items inspired by appearances of 2009 in the OEIS