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.

A287011 Amicable numbers (m, n) with record low values of m/n.

Original entry on oeis.org

220, 284, 280540, 365084, 319550, 430402, 4532710, 6135962, 938304290, 1344480478, 14840132450, 21445545118, 35049418250, 54192685558, 20568863440125, 32021343142659, 92371445691525, 154378742017851
Offset: 1

Views

Author

Amiram Eldar, Aug 31 2017

Keywords

Comments

The 2 members in each pair are adjacent to each other in the sequence.
The pairs were found using Sergei Chernykh's Amicable pair list. There are no other pairs with lesser member < 10^18.

Examples

			The ratios m/n are
220/284 = 0.774...
280540/365084 = 0.768...
319550/430402 = 0.742...
4532710/6135962 = 0.738...
938304290/1344480478 = 0.697...
14840132450/21445545118 = 0.691...
35049418250/54192685558 = 0.646...
20568863440125/32021343142659 = 0.642...
92371445691525/154378742017851 = 0.598...

Links

Crossrefs

Cf. A063990, A287026.

A292019 List of pairs of unitary amicable numbers (m, n) with record value of m/n.

Original entry on oeis.org

114, 126, 44772, 49308, 241110, 242730, 10254970, 10273670, 766292835, 766512285, 17454440640, 17454615360
Offset: 1

Views

Author

Amiram Eldar, Sep 07 2017

Keywords

Comments

The 2 members in each pair are adjacent to each other in the sequence.
The unitary version of A287026.

Examples

			The ratios m/n are
114/126 = 0.90476...
44772/49308 = 0.90800...
241110/242730 = 0.99332...
10254970/10273670 = 0.99818...
766292835/766512285 = 0.99971...
17454440640/17454615360 = 0.99999...

Crossrefs

Cf. A002952, A002953, A063991, A287026.
Showing 1-2 of 2 results.

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

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