This site is supported by donations to The OEIS Foundation.

 Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing. Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 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 Bruno Berselli, Table of n, a(n) for n = 1..100 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 Adjacent sequences:  A236769 A236770 A236771 * A236773 A236774 A236775 KEYWORD nonn AUTHOR Bruno Berselli, Feb 07 2014 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 13 17:17 EST 2019. Contains 329970 sequences. (Running on oeis4.)