A338449 - OEIS

%I #12 Aug 23 2024 15:05:26

%S 1,2,2,6,3,3,5,10,10,2,7,14,14,6,15,30,10,2,11,22,22,6,21,42,14,6,3,

%T 33,55,110,10,26,13,39,6,6,2,17,34,34,38,19,57,15,30,70,42,21,51,85,

%U 170,10,46,23,69,6,66,22,77,35,105,15,6,26,78,39,3,5,65

%N a(n) is the radical of A338338(n).

%H Rémy Sigrist, <a href="/A338449/b338449.txt">Table of n, a(n) for n = 1..10000</a>

%H Rémy Sigrist, <a href="/A338449/a338449.gp.txt">PARI program for A338449</a>

%F a(n) = A007947(A338338(n)).

%e For n = 9:

%e - A338338(9) = 20 = 2^2 * 5,

%e - so a(9) = 2 * 5 = 10.

%o (PARI) \\ See Links section.

%Y Cf. A007947, A338338.

%K nonn

%O 1,2

%A _Rémy Sigrist_, Oct 28 2020