

A307052


Larger of amicable numbers pair m < n such that A307037(m) = n and A307037(n) = m.


1



5, 17, 80, 257, 1280, 4352, 8060, 65537, 327680, 1065220, 1089452, 1114112, 16842752, 100340800, 383479200, 466344000000
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OFFSET

1,1


COMMENTS

The terms are ordered according to their lesser counterparts (A307051).
a(17) > 4*10^12.  Giovanni Resta, Mar 24 2019


LINKS

Table of n, a(n) for n=1..16.


MATHEMATICA

f[p_, e_] := p^e + (1)^e; a[1] = 1; a[n_] := Times @@ f @@@ FactorInteger[n]; s={}; Do[m = a[n]; If[m > n && a[m] == n, AppendTo[s, m]], {n, 1, 10^7}]; s


CROSSREFS

Cf. A307037, A307038, A307051.
Sequence in context: A149747 A149748 A151494 * A053418 A151882 A149749
Adjacent sequences: A307049 A307050 A307051 * A307053 A307054 A307055


KEYWORD

nonn,more


AUTHOR

Amiram Eldar, Mar 21 2019


EXTENSIONS

a(16) from Giovanni Resta, Mar 24 2019


STATUS

approved



