The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A036789 a(n) = Sum_{i=0..n} floor((2*i + 2)/(n - i + 1)). 1
2, 5, 8, 12, 17, 20, 26, 31, 36, 41, 48, 52, 59, 66, 71, 76, 86, 89, 98, 105, 110, 117, 126, 132, 139, 146, 155, 160, 171, 174, 184, 193, 198, 207, 218, 221, 230, 239, 248, 254, 265, 270, 279, 290, 297, 302, 315, 320, 332, 339, 346, 355, 366 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
COMMENTS
Original name was "A022821[ j ] - j - 1."
LINKS
MAPLE
A036789:=n->add(floor((2*i+2)/(n-i+1)), i=0..n): seq(A036789(n), n=0..100); # Wesley Ivan Hurt, Jan 30 2016
MATHEMATICA
Table[Sum[Floor[(2 i + 2)/(n - i + 1)], {i, 0, n}], {n, 0, 100}] (* Wesley Ivan Hurt, Jan 30 2016 *)
CROSSREFS
Cf. A022821.
Sequence in context: A108577 A272719 A297834 * A330188 A214047 A241566
KEYWORD
nonn,easy
AUTHOR
EXTENSIONS
New name from Wesley Ivan Hurt, Jan 30 2016
STATUS
approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 17 05:47 EDT 2024. Contains 373432 sequences. (Running on oeis4.)