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A032032
Number of ways to partition n labeled elements into sets of sizes of at least 2 and order the sets.
+0
4
1, 0, 1, 1, 7, 21, 141, 743, 5699, 42241, 382153, 3586155, 38075247, 428102117, 5257446533, 68571316063, 959218642651, 14208251423433, 223310418094785, 3699854395380371, 64579372322979335
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 9 14:43 EST 2009. Contains 170430 sequences.
AT&T Labs Research
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