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A121854
a(n) = floor(Pi*(sqrt(n))).
19
0, 3, 4, 5, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 12, 13, 13, 14, 14, 14, 15, 15, 15, 16, 16, 16, 16, 17, 17, 17, 18, 18, 18, 18, 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23, 23, 24, 24, 24
OFFSET
0,2
LINKS
MATHEMATICA
Table[Floor[\[Pi] Sqrt[n]], {n, 0, 65}] (* Harvey P. Dale, Apr 22 2011 *)
CROSSREFS
Sequence in context: A242374 A225179 A121857 * A196119 A225852 A198458
KEYWORD
nonn,easy
AUTHOR
Mohammad K. Azarian, Aug 30 2006
EXTENSIONS
Offset corrected and b-file updated by Ivan Panchenko, Nov 13 2013
STATUS
approved