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A260087 Larger of amicable pair (x, y) as they are listed in A259933. 7

%I #16 Jul 15 2015 18:03:18

%S 284,1210,2924,5564,6368,10856,14595,18416,66992,71145,76084,87633,

%T 88730,124155,123152,139815,153176,168730,176336,180848,203432,202444,

%U 365084,389924,430402,399592,455344,486178,514736,525915,669688,686072,652664,691256,712216,783556,796696,863835,901424,980984,1043096,1125765

%N Larger of amicable pair (x, y) as they are listed in A259933.

%C Another version of A002046.

%C First differs from A002046 at a(9).

%H Laszlo Hars, <a href="https://www.mail-archive.com/julia-users@googlegroups.com/msg04022.html">Performance compared to mathematica</a> Julia-users (2014)

%H Khelleos, <a href="http://www.cyberforum.ru/lisp/thread386611.html">Amicable numbers</a>, CyberForum.ru (2011)

%H OEIS Wiki, <a href="https://oeis.org/wiki/Amicable_numbers">Amicable numbers</a> (This page needs work)

%H Wikipédia, <a href="https://hu.wikipedia.org/wiki/Barátságos_számok">Barátságos számok</a> (contains a mistake: A063990 should be replaced with A259933)

%F a(n) = A259933(2n) = A259953(n) - A259933(2n-1) = A259953(n) - A260086(n).

%Y Cf. A002046, A063990, A259180, A259933, A259953, A260086.

%K nonn

%O 1,1

%A _Omar E. Pol_, Jul 15 2015

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Last modified April 19 05:02 EDT 2024. Contains 371782 sequences. (Running on oeis4.)