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A000195 log(n) rounded down. 16
0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4 (list; graph; refs; listen; history; internal format)
OFFSET

1,8

COMMENTS

Equals A004033(n) - 1 for n > 1.

LINKS

T. D. Noe, Table of n, a(n) for n=1..10000

MAPLE

Digits := 100; f := n->floor(evalf(log(n))); [ seq(f(n), n=1..100) ];

PROG

(PARI) a(n)=floor(log(n))

CROSSREFS

Cf. A000193, A004233.

Sequence in context: A133502 A137325 A180258 * A135663 A090620 A151659

Adjacent sequences:  A000192 A000193 A000194 * A000196 A000197 A000198

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 13 08:12 EST 2012. Contains 205451 sequences.