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A236772 a(n) = floor( Sum_{i=1..n} n^i/i ). 4
1, 4, 16, 97, 840, 9751, 141364, 2448224, 49213158, 1125229242, 28823071636, 817379051371, 25417591832210, 859893812841432, 31439503159778411, 1235301513693182001, 51906185332750116476, 2322562816174820224108, 110253678955674860565875 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
EXAMPLE
For n=5, floor(5 + 5^2/2 + 5^3/3 + 5^4/4 + 5^4) = floor(10085/12) = 840, therefore a(5) = 840.
MATHEMATICA
Table[Floor[Sum[n^i/i, {i, n}]], {n, 20}]
PROG
(Magma) [Floor(&+[n^i/i: i in [1..n]]): n in [1..20]];
CROSSREFS
Sequence in context: A032184 A130683 A111976 * A209299 A091040 A029985
KEYWORD
nonn
AUTHOR
Bruno Berselli, Feb 07 2014
STATUS
approved

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Last modified May 30 04:46 EDT 2024. Contains 372958 sequences. (Running on oeis4.)