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Search: id:A023880
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A023880 Number of partitions in expanding space. +0
1
1, 1, 5, 32, 298, 3531, 51609, 894834, 17980052, 410817517, 10518031721, 298207687029, 9273094072138, 313757506696967, 11474218056441581, 450961669608632160, 18954582520550896213, 848384721904740036422 (list; graph; listen)
OFFSET

0,3

FORMULA

G.f.: $ \prod_{k=1}^{\infty} (1 - x^k)^{(- k^k)}$.

CROSSREFS

Sequence in context: A127089 A068102 A001923 this_sequence A104031 A023882 A109780

Adjacent sequences: A023877 A023878 A023879 this_sequence A023881 A023882 A023883

KEYWORD

nonn

AUTHOR

Olivier Gerard (ogerard(AT)ext.jussieu.fr)

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Last modified August 29 14:50 EDT 2008. Contains 143238 sequences.


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