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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
OFFSET
1,5
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
KEYWORD
nonn
AUTHOR
Clark Kimberling, Aug 19 2011
STATUS
approved