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A017912 Powers of sqrt(2) rounded up. 4
1, 2, 2, 3, 4, 6, 8, 12, 16, 23, 32, 46, 64, 91, 128, 182, 256, 363, 512, 725, 1024, 1449, 2048, 2897, 4096, 5793, 8192, 11586, 16384, 23171, 32768, 46341, 65536, 92682, 131072, 185364, 262144, 370728, 524288 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

FORMULA

a(n) = A003059(A000079(n)). - Jason Kimberley, Oct 28 2016

MATHEMATICA

Ceiling[(Sqrt[2])^Range[0, 40]] (* Vincenzo Librandi, Nov 20 2011 *)

PROG

(MAGMA) [Ceiling(Sqrt(2^n)): n in [0..40]]; // Vincenzo Librandi, Nov 20 2011

CROSSREFS

Cf. A329202.

Sequence in context: A006207 A318403 A332755 * A102543 A316076 A325832

Adjacent sequences:  A017909 A017910 A017911 * A017913 A017914 A017915

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified July 10 00:05 EDT 2020. Contains 335570 sequences. (Running on oeis4.)