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A194250 Partial sums of A194249. 2
0, 0, 1, 2, 4, 6, 9, 12, 16, 21, 26, 31, 37, 43, 50, 57, 65, 74, 83, 92, 102, 112, 122, 133, 144, 156, 169, 182, 196, 210, 225, 240, 255, 271, 287, 304, 322, 340, 359, 378, 397, 417, 437, 458, 479, 501, 523, 546, 570, 594, 618, 643, 668, 694, 720, 747, 774 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,4
LINKS
MATHEMATICA
r = 3-Sqrt[6];
a[n_] := Floor[Sum[FractionalPart[k*r], {k, 1, n}]]
Table[a[n], {n, 1, 90}] (* A194249 *)
s[n_] := Sum[a[k], {k, 1, n}]
Table[s[n], {n, 1, 100}] (* A194250 *)
Accumulate[Accumulate[Table[FractionalPart[(3-Sqrt[6])n], {n, 80}]] //Floor] (* Harvey P. Dale, Jun 22 2016 *)
CROSSREFS
Cf. A194249.
Sequence in context: A224808 A351719 A292459 * A024610 A022778 A156022
KEYWORD
nonn
AUTHOR
Clark Kimberling, Aug 20 2011
STATUS
approved

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Last modified March 29 00:26 EDT 2024. Contains 371264 sequences. (Running on oeis4.)