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A194215
Partial sums of A194214.
2
0, 0, 0, 0, 1, 2, 4, 7, 11, 16, 21, 26, 31, 36, 42, 48, 55, 63, 71, 80, 90, 100, 111, 122, 133, 145, 157, 170, 184, 198, 213, 228, 243, 259, 275, 291, 308, 325, 343, 362, 382, 403, 424, 445, 466, 488, 510, 533, 556, 580, 605, 631, 657, 683, 709, 735, 762
OFFSET
1,6
MATHEMATICA
r = 2Pi/3;
a[n_] := Floor[Sum[FractionalPart[k*r], {k, 1, n}]]
Table[a[n], {n, 1, 90}] (* A194214 *)
s[n_] := Sum[a[k], {k, 1, n}]
Table[s[n], {n, 1, 100}] (* A194215 *)
CROSSREFS
Cf. A194214.
Sequence in context: A316264 A067744 A307601 * A025718 A022783 A025708
KEYWORD
nonn
AUTHOR
Clark Kimberling, Aug 19 2011
STATUS
approved