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A135039 Ceiling(Pi*n^2). 4
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

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

MATHEMATICA

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

CROSSREFS

Cf. A066643.

Sequence in context: A155331 A155387 A155366 * A168559 A212247 A213801

Adjacent sequences:  A135036 A135037 A135038 * A135040 A135041 A135042

KEYWORD

nonn,easy

AUTHOR

Mohammad K. Azarian, Feb 29 2008

EXTENSIONS

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

STATUS

approved

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Last modified August 14 01:55 EDT 2020. Contains 336476 sequences. (Running on oeis4.)