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A104103 Ceiling(sqrt( prime(n))). 4
2, 2, 3, 3, 4, 4, 5, 5, 5, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 19 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Number of squares (including 0) <= prime(n)

EXAMPLE

a(5)=4 because p(5)=11 and there are 4 squares <=11: 0,1,4,9.

CROSSREFS

Sequence in context: A177357 A165906 A165907 * A194964 A029923 A096029

Adjacent sequences:  A104100 A104101 A104102 * A104104 A104105 A104106

KEYWORD

nonn

AUTHOR

Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Mar 04 2005

EXTENSIONS

Edited by Zak Seidov, Sep 24 2007

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Last modified February 14 13:08 EST 2012. Contains 205623 sequences.