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A063945
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Number of nonnegative integers with n digits.
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0
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10, 90, 900, 9000, 90000, 900000, 9000000, 90000000, 900000000, 9000000000, 90000000000, 900000000000, 9000000000000, 90000000000000, 900000000000000, 9000000000000000, 90000000000000000
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Also, first differences of A000533. - Omar E. Pol, Feb 24 2011.
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FORMULA
| a(1)=10, a(2)=90, a(n)=a(n-1)*10 for n>2
a(n)=A052268(n), n>1. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 02 2008]
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CROSSREFS
| Sequence in context: A137684 A097394 A172199 * A046706 A116348 A043088
Adjacent sequences: A063942 A063943 A063944 * A063946 A063947 A063948
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KEYWORD
| base,easy,nonn
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AUTHOR
| Shyam Sunder Gupta (guptass(AT)rediffmail.com), Sep 01 2001
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