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A194153
Sum{floor(j*(sqrt(5))/2) : 1<=j<=n}; n-th partial sum of Beatty sequence for (sqrt(5))/2.
0
1, 3, 6, 10, 15, 21, 28, 36, 46, 57, 69, 82, 96, 111, 127, 144, 163, 183, 204, 226, 249, 273, 298, 324, 351, 380, 410, 441, 473, 506, 540, 575, 611, 649, 688, 728, 769, 811, 854, 898, 943, 989, 1037, 1086, 1136, 1187, 1239, 1292, 1346, 1401, 1458, 1516
OFFSET
1,2
MATHEMATICA
c[n_] := Sum[Floor[j*Sqrt[5])/2], {j, 1, n}];
c = Table[c[n], {n, 1, 90}]
CROSSREFS
Cf. A194151 (Beatty sequence for (sqrt(5))/2).
Sequence in context: A050760 A075057 A069792 * A025737 A120721 A122056
KEYWORD
nonn
AUTHOR
Clark Kimberling, Aug 17 2011
STATUS
approved