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A194209 Partial sums of A194208. 2
0, 0, 1, 2, 4, 6, 9, 13, 17, 22, 27, 33, 39, 46, 54, 62, 71, 80, 90, 100, 111, 123, 135, 148, 161, 175, 189, 204, 220, 236, 253, 270, 288, 306, 325, 345, 365, 385, 406, 428, 450, 473, 496, 520, 544, 569, 594, 620, 647, 674, 701, 729, 757, 786, 816, 846 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..56.

MATHEMATICA

r = Pi/2;

a[n_] := Floor[Sum[FractionalPart[k*r], {k, 1, n}]]

Table[a[n], {n, 1, 90}]  (* A194208 *)

s[n_] := Sum[a[k], {k, 1, n}]

Table[s[n], {n, 1, 100}] (* A194209 *)

CROSSREFS

Cf. A194208.

Sequence in context: A049981 A194178 A194213 * A183143 A184977 A025705

Adjacent sequences:  A194206 A194207 A194208 * A194210 A194211 A194212

KEYWORD

nonn

AUTHOR

Clark Kimberling, Aug 19 2011

STATUS

approved

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Last modified August 11 18:17 EDT 2020. Contains 336428 sequences. (Running on oeis4.)