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A004216 log_10 (n) rounded down. +0
16
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2 (list; graph; listen)
OFFSET

1,100

FORMULA

a(n) = if n > 9 then a(floor(n / 10)) + 1 else 0. - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 31 2001

CROSSREFS

Adjacent sequences: A004213 A004214 A004215 this_sequence A004217 A004218 A004219

Sequence in context: A133563 A104518 A114295 this_sequence A076489 A127322 A027354

KEYWORD

nonn

AUTHOR

njas

EXTENSIONS

More terms from James A. Sellers (sellersj(AT)math.psu.edu), Sep 19 2000

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Last modified October 12 15:26 EDT 2008. Contains 144830 sequences.


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