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A194226 Partial sums of A194225. 2
0, 0, 0, 1, 3, 6, 9, 12, 15, 18, 22, 27, 33, 39, 45, 51, 57, 64, 72, 81, 90, 99, 108, 117, 127, 138, 150, 162, 174, 186, 198, 211, 225, 240, 255, 270, 285, 300, 316, 333, 351, 369, 387, 405, 423, 442, 462, 483, 504, 525, 546, 567, 589, 612, 636, 660, 684 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

Table of n, a(n) for n=1..57.

MATHEMATICA

r = 1/7;

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

Table[a[n], {n, 1, 90}]    (* A194225 *)

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

Table[s[n], {n, 1, 100}]   (* A194226 *)

CROSSREFS

Cf. A194225.

Sequence in context: A177102 A292666 A028251 * A193803 A284601 A039004

Adjacent sequences:  A194223 A194224 A194225 * A194227 A194228 A194229

KEYWORD

nonn

AUTHOR

Clark Kimberling, Aug 19 2011

STATUS

approved

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Last modified December 14 19:27 EST 2019. Contains 329987 sequences. (Running on oeis4.)