login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A305806 Möbius transform of A175851. 3
1, 0, 0, 1, 0, 1, 0, 0, 2, 3, 0, -1, 0, 1, 2, 2, 0, -2, 0, -3, 2, 3, 0, 0, 2, 3, 2, 3, 0, -5, 0, -2, 2, 3, 4, 4, 0, 1, 2, 2, 0, -3, 0, -3, -2, 3, 0, -2, 2, -2, 4, 1, 0, -2, 2, -2, 4, 5, 0, 3, 0, 1, -2, 2, 4, -1, 0, -3, 2, -5, 0, -4, 0, 1, -2, 1, 4, -1, 0, -4, -2, 3, 0, -3, 2, 3, 4, 4, 0, 2, 2, -1, 4, 5, 6, 8, 0, -2, -2, 2, 0, -7, 0, -4, -6 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,9

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..65537

FORMULA

a(n) = Sum_{d|n} A008683(n/d)*A175851(d).

PROG

(PARI)

A175851(n) = if(1==n, n, 1 + n - precprime(n));

A305806(n) = sumdiv(n, d, moebius(n/d)*A175851(d));

CROSSREFS

Cf. A008683, A175851, A305791, A305805.

Sequence in context: A054439 A318656 A215151 * A064722 A259748 A298159

Adjacent sequences:  A305803 A305804 A305805 * A305807 A305808 A305809

KEYWORD

sign

AUTHOR

Antti Karttunen, Jun 13 2018

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 26 19:44 EDT 2019. Contains 323597 sequences. (Running on oeis4.)