A134578 a(n) = floor(n^sqrt(4*Pi/3)).

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

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