A135039 Ceiling(Pi*n^2).

0, 4, 13, 29, 51, 79, 114, 154, 202, 255, 315, 381, 453, 531, 616, 707, 805, 908, 1018, 1135, 1257, 1386, 1521, 1662, 1810, 1964, 2124, 2291, 2464, 2643, 2828, 3020, 3217, 3422, 3632, 3849, 4072, 4301, 4537, 4779, 5027, 5282, 5542, 5809, 6083, 6362, 6648

Offset: 0

Author

Mohammad K. Azarian, Feb 29 2008

Keywords

• nonn
• easy

Comments

Old name was "a(n)=ceiling[area of a circle of radius n]".

Links

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

Crossrefs

Cf. A066643.

Programs

Mathematica

Ceiling[Pi Range[50]^2] (* Harvey P. Dale, Oct 10 2011 *)

Extensions

New name (using explicit formula), Joerg Arndt, Feb 19 2013