login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A134578 a(n) = floor(n^sqrt(4*Pi/3)). 0
0, 1, 4, 9, 17, 26, 39, 53, 70, 89, 111, 135, 161, 190, 221, 255, 291, 329, 370, 414, 459, 508, 559, 612, 668, 726, 786, 850, 915, 984, 1054, 1127, 1203, 1281, 1362, 1446, 1531, 1620, 1711, 1804, 1900, 1998, 2100, 2203, 2309, 2418 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..45.

MATHEMATICA

With[{c=Sqrt[4 Pi/3]}, Floor[Range[0, 50]^c]] (* Harvey P. Dale, Mar 12 2015 *)

PROG

(PARI) a(n) = floor(n^(sqrt(4*Pi/3))) \\ Michel Marcus, Jul 18 2013

CROSSREFS

Sequence in context: A173562 A161320 A170879 * A189979 A272718 A301255

Adjacent sequences:  A134575 A134576 A134577 * A134579 A134580 A134581

KEYWORD

nonn

AUTHOR

Rolf Pleisch, Jan 31 2008

EXTENSIONS

More terms from Michel Marcus, Jul 18 2013

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 November 14 15:24 EST 2019. Contains 329126 sequences. (Running on oeis4.)