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A260086 Smaller of amicable pair (x, y) as they are listed in A259933. 7
220, 1184, 2620, 5020, 6232, 10744, 12285, 17296, 66928, 67095, 63020, 69615, 79750, 100485, 122368, 122265, 141664, 142310, 171856, 176272, 185368, 196724, 280540, 308620, 319950, 356408, 437456, 469028, 503056, 522405, 600392, 609928, 643336, 624184, 635624, 667964, 726104, 802725, 879712, 898216, 998104, 947835 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Another version of A002025.

First differs from A002025 at a(9).

LINKS

Table of n, a(n) for n=1..42.

Laszlo Hars, Performance compared to mathematica Julia-users (2014)

Khelleos, Amicable numbers, CyberForum.ru (2011)

OEIS Wiki, Amicable numbers (This page needs work)

Wikipédia, Barátságos számok (contains a mistake: A063990 should be replaced with A259933)

FORMULA

a(n) = A259933(2n-1) = A259953(n) - A259933(2n) = A259953(n) - A260087(n).

CROSSREFS

Cf. A002025, A063990, A259180, A259933, A259953, A260087.

Sequence in context: A102073 A234969 A002025 * A339678 A339682 A241615

Adjacent sequences:  A260083 A260084 A260085 * A260087 A260088 A260089

KEYWORD

nonn

AUTHOR

Omar E. Pol, Jul 15 2015

STATUS

approved

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Last modified September 27 19:34 EDT 2021. Contains 347694 sequences. (Running on oeis4.)