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!)
A294246 Sum of the smaller parts of the partitions of 2n into two parts with smaller part nonsquarefree. 2
0, 0, 0, 4, 4, 4, 4, 12, 21, 21, 21, 33, 33, 33, 33, 49, 49, 67, 67, 87, 87, 87, 87, 111, 136, 136, 163, 191, 191, 191, 191, 223, 223, 223, 223, 259, 259, 259, 259, 299, 299, 299, 299, 343, 388, 388, 388, 436, 485, 535, 535, 587, 587, 641, 641, 697, 697, 697 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,4
LINKS
FORMULA
a(n) = Sum_{i=1..n} i * (1 - mu(i)^2), where mu is the Möbius function (A008683).
MATHEMATICA
Table[Sum[k (1 - MoebiusMu[k]^2), {k, n}], {n, 80}]
CROSSREFS
Sequence in context: A190718 A035621 A046109 * A107680 A358509 A285052
KEYWORD
nonn,easy
AUTHOR
Wesley Ivan Hurt, Oct 25 2017
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 April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)