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Smallest k>1 such that k*(n-th minimal number) is also a minimal number.
2

%I #17 Aug 31 2019 22:26:45

%S 2,2,3,2,2,3,2,4,3,2,3,2,4,2,3,3,2,5,4,2,4,3,3,2,4,3,2,5,3,4,3,2,5,4,

%T 4,3,2,4,2,3,7,3,3,3,2,5,2,4,5,4,4,4,5,2,2,3,3,3,4,2,7,3,2,7,2,2,5,5,

%U 3,3,4,4,5,3,2,3,5,2,2,4,3,4,2,4,3,4,2

%N Smallest k>1 such that k*(n-th minimal number) is also a minimal number.

%C A minimal number is the smallest number with a given number of divisors, see A007416.

%C Is a(n) in A000961? - _David A. Corneth_, Aug 31 2019

%H David A. Corneth, <a href="/A099318/b099318.txt">Table of n, a(n) for n = 1..10000</a> (first 844 terms from Amiram Eldar)

%F a(n)*A007416(n) = A007416(m) for some m.

%e A007416(38) = A005179(64) = 7560 = 2^3*3^3*5*7;

%Y Cf. A000961, A005179, A007416.

%K nonn

%O 1,1

%A _Reinhard Zumkeller_, Oct 12 2004

%E More terms from _Amiram Eldar_, Aug 31 2019