

A050972


Smaller member of friendly pairs ordered by smallest maximal element.


10



6, 30, 80, 40, 12, 84, 66, 78, 102, 6, 28, 114, 240, 138, 120, 150, 174, 135, 186, 864, 222, 246, 60, 258, 282, 560, 318, 84, 270, 330, 84, 270, 1488, 354, 366, 720, 390, 402, 426, 360, 438, 880, 474, 498, 510, 440, 30, 140, 534, 132, 1040, 570, 582, 606
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OFFSET

1,1


COMMENTS

Conjecture: If a(n) is in A005153, then A050973(n) is in A005153. It is natural to ask if there exists a generalization of the indicator function for A005153, call it m(n), such that m(n) = 1 for n in A005153, 0 < m(n) < 1 otherwise, and m(a(n)) <= m(A050973(n)) for all n. See also A017666.  Jaycob Coleman, Sep 27 2014


LINKS

Donovan Johnson, Table of n, a(n) for n = 1..10000
Eric Weisstein's World of Mathematics, Friendly Pair.


CROSSREFS

Cf. A050973 (larger member of pair), A074902 (friendly numbers).
Sequence in context: A215906 A038039 A258903 * A259918 A002444 A152788
Adjacent sequences: A050969 A050970 A050971 * A050973 A050974 A050975


KEYWORD

nonn


AUTHOR

Eric W. Weisstein


STATUS

approved



