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A032220 Number of ways to partition n labeled elements into pie slices of different odd sizes, allowing the pie to be turned over. +0
2
1, 0, 1, 4, 1, 6, 1, 64, 505, 130, 1321, 1024, 13157, 2380, 395851, 17313664, 1639617, 73554666, 16100905, 919339264, 292018525, 18910614580, 1549052715, 1523900106304, 141366386526801, 9494469178116 (list; graph; listen)
OFFSET

1,4

LINKS

C. G. Bower, Transforms (2)

FORMULA

"DGJ" (bracelet, element, labeled) transform of 1, 0, 1, 0... (odds)

CROSSREFS

Adjacent sequences: A032217 A032218 A032219 this_sequence A032221 A032222 A032223

Sequence in context: A087652 A072195 A032310 this_sequence A032145 A032050 A057160

KEYWORD

nonn

AUTHOR

Christian G. Bower (bowerc(AT)usa.net)

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.


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