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A104136
a(n) = ceiling(sqrt(2*Pi*n)).
1
3, 4, 5, 6, 6, 7, 7, 8, 8, 8, 9, 9, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22
OFFSET
1,1
LINKS
MATHEMATICA
Ceiling[Sqrt[2Pi*Range[80]]] (* Harvey P. Dale, Jun 13 2015 *)
PROG
(PARI) vector(80, n, ceil(sqrt(2*Pi*n))) \\ G. C. Greubel, Oct 01 2018
(Magma) R:=RealField(10); [Ceiling(Sqrt(2*Pi(R)*n)): n in [1..80]]; // G. C. Greubel, Oct 01 2018
CROSSREFS
Cf. A104135 (with floor).
Sequence in context: A230113 A364528 A217031 * A198466 A212642 A159624
KEYWORD
nonn
AUTHOR
Jun Mizuki (suzuki32(AT)sanken.osaka-u.ac.jp), Mar 07 2005
STATUS
approved