Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A126165
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A126165 Smaller member of each exponential amicable pair. +0
5
90972, 454860, 937692, 1000692, 1182636, 1546524, 2092356, 2638188, 2820132, 3365964, 3729852, 3911796, 4275684, 4548600, 4688460, 4821516 (list; graph; listen)
OFFSET

1,1

COMMENT

This sequence includes the smallest member of all exponential amicable pairs, and does not discriminate between primitive and nonprimitive pairs.

LINKS

Ant King, Mathematica programs for A126164 - A126166

Moews, David, Perfect, amicable and sociable numbers.

Pedersen, J. M., Known amicable pairs.

FORMULA

The values of m for which esigma(m)=esigma(n)=m+n and m<n, where esigma is defined in A051377.

EXAMPLE

a(3)=937692 because (937692,968436) is the third exponential amicable pair

CROSSREFS

Cf. A051377, A054979, A049419, A054980, A126164.

Sequence in context: A015316 A127660 A127659 this_sequence A116097 A116122 A116134

Adjacent sequences: A126162 A126163 A126164 this_sequence A126166 A126167 A126168

KEYWORD

hard,nonn

AUTHOR

Ant King (mathstutoring(AT)ntlworld.com), Dec 21 2006

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


AT&T Labs Research