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A132106 1 + floor(sqrt(n)) + Sum_{i=1..n} floor(n/i). 16
1, 3, 5, 7, 11, 13, 17, 19, 23, 27, 31, 33, 39, 41, 45, 49, 55, 57, 63, 65, 71, 75, 79, 81, 89, 93, 97, 101, 107, 109, 117, 119, 125, 129, 133, 137, 147, 149, 153, 157, 165, 167, 175, 177, 183, 189, 193, 195, 205, 209, 215, 219, 225, 227, 235, 239, 247, 251, 255, 257, 269 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Matches first 8 odd primes.

LINKS

Table of n, a(n) for n=0..60.

CROSSREFS

Sequence in context: A309203 A176847 A067019 * A242393 A210494 A318871

Adjacent sequences:  A132103 A132104 A132105 * A132107 A132108 A132109

KEYWORD

nonn

AUTHOR

Richard C. Schroeppel, Oct 31 2007

STATUS

approved

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Last modified November 22 00:32 EST 2019. Contains 329383 sequences. (Running on oeis4.)