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A068413
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a(n) = number of partitions of 2^n.
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5
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1, 2, 5, 22, 231, 8349, 1741630, 4351078600, 365749566870782, 4453575699570940947378, 61847822068260244309086870983975, 18116048323611252751541173214616030020513022685, 6927233917602120527467409170319882882996950147283323368445315320451
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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LINKS
| Henry Bottomley, Partition calculators using java applets
Index entries for sequences related to partitions
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FORMULA
| a(n) =A000041(A000079(n))
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EXAMPLE
| a(2)=5 since there are 5 partitions of 2^2=4: 4, 3+1, 2+2, 2+1+1, 1+1+1+1+1.
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MATHEMATICA
| Table[ PartitionsP[2^n], {n, 0, 12}]
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CROSSREFS
| Cf. A000041, A018819.
Sequence in context: A193660 A090450 A137099 * A137069 A050994 A034384
Adjacent sequences: A068410 A068411 A068412 * A068414 A068415 A068416
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KEYWORD
| nonn
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AUTHOR
| Henry Bottomley (se16(AT)btinternet.com), Mar 03 2002
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