cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-2 of 2 results.

A018266 Divisors of 60.

Original entry on oeis.org

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60
Offset: 1

Views

Author

N. J. A. Sloane

Keywords

Comments

Sequence is finite with last term a(12) = 60; A000005(60) = 12. - Reinhard Zumkeller, Dec 08 2009.
60 is a highly composite number: A002182(9) = 60. - Reinhard Zumkeller, Jun 21 2010
There are 35 ways to partition 60 as a sum of its distinct divisors (see A033630). This is more than any smaller number (hence 60 is listed in A065218). - Alonso del Arte, Oct 12 2017

Links

Crossrefs

Cf. A035303, A171425. - Reinhard Zumkeller, Dec 08 2009
Cf. A018253, A018256, A018261, A018293, A018321, A018350, A018412, A018609, A018676, A178877, A178878, A165412, A178858, A178859, A178860, A178861, A178862, A178863, A178864. - Reinhard Zumkeller, Jun 21 2010

Programs

Formula

a(n) = n + floor((n-1)/6)*(60/(13-n)-n). - Aaron J Grech, Aug 11 2024

A171425 Divisors of 60^2 that are not divisors of 60.

Original entry on oeis.org

8, 9, 16, 18, 24, 25, 36, 40, 45, 48, 50, 72, 75, 80, 90, 100, 120, 144, 150, 180, 200, 225, 240, 300, 360, 400, 450, 600, 720, 900, 1200, 1800, 3600
Offset: 1

Views

Author

Reinhard Zumkeller, Dec 08 2009

Keywords

Comments

Set difference A035303 minus A018266;
sequence is finite with last term a(33)=3600=60^2; A055205(60)=33.

Programs

Showing 1-2 of 2 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.