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A087070 Sum{Floor(n*(r^k): r=3/4, k>=0). 0
0, 1, 4, 7, 11, 14, 18, 21, 26, 29, 34, 37, 41, 45, 48, 53, 57, 61, 65, 69, 73, 74, 79, 84, 89, 91, 95, 100, 102, 107, 112, 116, 121, 122, 128, 131, 136, 137, 144, 146, 152, 155, 158, 164, 166, 171, 174, 178, 184, 185, 190, 195, 198, 201, 207, 211, 214, 220, 222, 226 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..59.

EXAMPLE

a(3)=7=3+[3*3/4]+[3*9/16]+[3*27/64]+...

MATHEMATICA

Table[Sum[Floor[n (3/4)^k], {k, 0, n}], {n, 0, 60}] (* Harvey P. Dale, Jul 27 2020 *)

CROSSREFS

Cf. A005187.

Sequence in context: A047345 A310728 A247157 * A310729 A198271 A310730

Adjacent sequences:  A087067 A087068 A087069 * A087071 A087072 A087073

KEYWORD

nonn

AUTHOR

Clark Kimberling, Aug 07 2003

STATUS

approved

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Last modified January 18 19:37 EST 2022. Contains 350455 sequences. (Running on oeis4.)