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A061901
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Number of distinct numbers that can be formed from the digits of n.
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0
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 2, 4, 4, 4, 4, 4, 4, 4, 4, 3, 4, 2, 4, 4, 4, 4, 4, 4, 4, 3, 4, 4, 2, 4, 4, 4, 4, 4, 4, 3, 4, 4, 4, 2, 4, 4, 4, 4, 4, 3, 4, 4, 4, 4, 2, 4, 4, 4, 4, 3, 4, 4, 4, 4, 4, 2, 4, 4, 4, 3, 4, 4, 4, 4, 4, 4, 2, 4, 4, 3, 4, 4, 4, 4, 4, 4, 4, 2, 4, 3, 4, 4, 4, 4, 4, 4, 4, 4, 2, 4, 6, 11, 11
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,11
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EXAMPLE
| The digits of 13 can form 1, 3, 13 and 31. The digits of 201 can form 0, 1, 2, 10, 12, 20, 21, 102, 120, 210 and 201. Thus a(13) = 4, a(201) = 11.
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CROSSREFS
| Cf. A061487, A061497, A061499, A061500.
Sequence in context: A110550 A128220 A134749 * A078822 A154392 A069745
Adjacent sequences: A061898 A061899 A061900 * A061902 A061903 A061904
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KEYWORD
| nonn,base
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AUTHOR
| Asher Auel (asher.auel(AT)reed.edu), May 05 2001
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