login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A244325 Floor(antisigma(n) / n), where antisigma(n) = A024816(n) = the sum of the non-divisors of n that are between 1 and n. 3
0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15, 16, 15, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 21, 23, 23, 24, 24, 25, 25, 26, 26, 27, 27, 28, 27, 29, 29, 30, 30, 31, 31, 32, 32, 33, 33, 34 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,7

COMMENTS

a(36) is first term such that a(n) < a(n-1) - see A244326.

LINKS

Jaroslav Krizek, Table of n, a(n) for n = 1..10000

EXAMPLE

For n=10: a(10) = floor(antisigma(10/10)) = floor(37/10)) = 3.

PROG

(MAGMA) [Floor((n*(n+1)div 2-SumOfDivisors(n))div n): n in [1..1000]]

CROSSREFS

Cf. A024816, A244324, A244326.

Sequence in context: A320467 A086388 A111660 * A168050 A065033 A001057

Adjacent sequences:  A244322 A244323 A244324 * A244326 A244327 A244328

KEYWORD

nonn

AUTHOR

Jaroslav Krizek, Jun 25 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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 31 22:45 EDT 2020. Contains 334756 sequences. (Running on oeis4.)