login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A017937 Powers of sqrt(11) rounded down. 1
1, 3, 11, 36, 121, 401, 1331, 4414, 14641, 48558, 161051, 534145, 1771561, 5875603, 19487171, 64631634, 214358881, 710947978, 2357947691, 7820427766, 25937424601, 86024705429, 285311670611 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..900

FORMULA

a(n) = floor(sqrt(11^n)). - Vincenzo Librandi, Jun 24 2011

MATHEMATICA

Floor[(Sqrt[11])^Range[0, 30]] (* Harvey P. Dale, Feb 01 2014 *)

PROG

(MAGMA)[Floor(Sqrt(11^n)): n in [0..30]]; // Vincenzo Librandi, Jun 24 2011

(PARI) a(n)=sqrtint(11^n) \\ Charles R Greathouse IV, Nov 18 2011

CROSSREFS

Cf. A010468 (sqrt(11)).

Sequence in context: A296391 A305132 A291413 * A017938 A333760 A100068

Adjacent sequences:  A017934 A017935 A017936 * A017938 A017939 A017940

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 6 23:10 EDT 2021. Contains 343599 sequences. (Running on oeis4.)