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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
OFFSET
0,2
COMMENTS
Old name was "a(n)=ceiling[area of a circle of radius n]".
LINKS
MATHEMATICA
Ceiling[Pi Range[50]^2] (* Harvey P. Dale, Oct 10 2011 *)
CROSSREFS
Cf. A066643.
Sequence in context: A155366 A340002 A368570 * A168559 A212247 A213801
KEYWORD
nonn,easy
AUTHOR
Mohammad K. Azarian, Feb 29 2008
EXTENSIONS
New name (using explicit formula), Joerg Arndt, Feb 19 2013
STATUS
approved