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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
OFFSET
1,4
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
KEYWORD
nonn
AUTHOR
Clark Kimberling, Aug 19 2011
STATUS
approved