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A097514
Number of partitions of an n-set without blocks of size 2.
+0
6
1, 1, 1, 2, 6, 17, 53, 205, 871, 3876, 18820, 99585, 558847, 3313117, 20825145, 138046940, 959298572, 6974868139, 52972352923, 419104459913, 3446343893607, 29405917751526, 259930518212766, 2376498296500063, 22441988298860757
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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.
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