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Search: id:A066874
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| A066874 |
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Number of partitions of n into unitary divisors of n. |
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+0
1
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| 1, 2, 2, 2, 2, 8, 2, 2, 2, 11, 2, 12, 2, 14, 14, 2, 2, 17, 2, 17, 18, 20, 2, 20, 2, 23, 2, 22, 2, 742, 2, 2, 26, 29, 26, 27, 2, 32, 30, 29, 2, 1654, 2, 32, 32, 38, 2, 36, 2, 41, 38, 37, 2, 44, 38, 38, 42, 47, 2, 3004, 2, 50, 42, 2, 44, 5257, 2, 47, 50, 5066, 2, 47, 2, 59, 54, 52, 50
(list; graph; listen)
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OFFSET
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1,2
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EXAMPLE
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a(12) = 12 because the unitary divisors of 12 are 1, 3, 4, and 12; and the partitions are 12, 4+4+4, 4+4+3+1, 4+4+(4x1), 4+3+3+1+1, 4+3+(5x1), 4+(8x1), 3+3+3+3, 3+3+3+1+1+1, 3+3+(6x1), 3+(9x1) and 12x1.
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CROSSREFS
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Cf. A018818.
Adjacent sequences: A066871 A066872 A066873 this_sequence A066875 A066876 A066877
Sequence in context: A061292 A138068 A054083 this_sequence A087577 A058788 A013598
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KEYWORD
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easy,nonn
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AUTHOR
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Naohiro Nomoto (n_nomoto(AT)yabumi.com), Jan 26 2002
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EXTENSIONS
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More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Nov 21 2002
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