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A214220 Smallest squarefree deficient number with n prime factors that is part of primitive friendly pair. 1

%I #6 Jul 09 2012 18:01:25

%S 273,1995,356235,6768465,215561445,8381978605,889577580507,

%T 9176928067615,977229739621135,159778696591499755,

%U 12961232730855705065,5133226984135500020155,527303555325724107882055,36714792413117114527127897,96369422480705367222515908615

%N Smallest squarefree deficient number with n prime factors that is part of primitive friendly pair.

%H Michel Marcus, <a href="/A214220/b214220.txt">Table of n, a(n) for n = 3..22</a>

%H Michel Marcus, <a href="/A214220/a214220.txt">Prime factors of the friendly pairs for n=3..22</a>

%e For n=3, 273 (3*7*13) and 2876211 (3^2*13^2*31*61) have no common prime factor with same exponent.

%Y Cf. A096366.

%K nonn

%O 3,1

%A _Michel Marcus_, Jul 07 2012

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Last modified March 28 15:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)