A104136 a(n) = ceiling(sqrt(2*Pi*n)).

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

G. C. Greubel, Table of n, a(n) for n = 1..10000

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

Adjacent sequences: A104133 A104134 A104135 * A104137 A104138 A104139

Keyword

nonn

Author

Jun Mizuki (suzuki32(AT)sanken.osaka-u.ac.jp), Mar 07 2005

Status

approved