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A184393 The smallest number m such that sigma(m) = A007368(n), where A007368(n) = the smallest k such that sigma(x) = k has exactly n solutions. 4

%I #11 Oct 27 2012 10:12:54

%S 1,6,14,42,30,60,114,132,120,204,210,480,408,390,264,930,1080,1860,

%T 864,870,552,3120,4080,1140,1380,1020,2460,2184,840,2040,3480,4140,

%U 1560,2208,1320,3780,1848,5544,7590,6468,8544,13500,8280,8190,4872,4620,8856

%N The smallest number m such that sigma(m) = A007368(n), where A007368(n) = the smallest k such that sigma(x) = k has exactly n solutions.

%C A184394 is the sequence of the largest such numbers. Row n of A201915 gives all n values satisfying sigma(x) = A007368(n).

%H Donovan Johnson, <a href="/A184393/b184393.txt">Table of n, a(n) for n = 1..1000</a>

%e For n = 5, sequence of defined numbers m_5: 30, 46, 51, 55, 71; a(5) = 30.

%K nonn

%O 1,2

%A _Jaroslav Krizek_, Jan 12 2011

%E Extended by _T. D. Noe_, Jan 24 2012

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Last modified April 16 08:27 EDT 2024. Contains 371698 sequences. (Running on oeis4.)