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A032616 a(n) = floor(n^2 / Pi). 2
0, 0, 1, 2, 5, 7, 11, 15, 20, 25, 31, 38, 45, 53, 62, 71, 81, 91, 103, 114, 127, 140, 154, 168, 183, 198, 215, 232, 249, 267, 286, 305, 325, 346, 367, 389, 412, 435, 459, 484, 509, 535, 561, 588, 616, 644, 673, 703, 733, 764, 795, 827, 860, 894 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..53.

MATHEMATICA

a[n_]:=Floor[(n^2)/Pi]; (* Vladimir Joseph Stephan Orlovsky, Dec 12 2008 *)

CROSSREFS

Sequence in context: A134640 A216094 A184857 * A006066 A084935 A239072

Adjacent sequences:  A032613 A032614 A032615 * A032617 A032618 A032619

KEYWORD

nonn,easy

AUTHOR

Patrick De Geest, May 15 1998

STATUS

approved

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Last modified October 23 18:52 EDT 2018. Contains 316530 sequences. (Running on oeis4.)