A364564 - OEIS

%I #9 Jul 29 2023 15:59:22

%S 1,3,5,3,5,7,5,3,7,5,7,11,7,5,11,3,13,11,7,11,5,5,13,7,11,13,7,17,7,

%T 13,17,5,11,3,7,13,11,17,11,7,19,13,7,13,17,11,5,11,5,17,13,7,13,11,

%U 13,7,11,17,7,13,17,11,5,19,13,17,19,5,11,13,3,7,19,17,13,11,17,13,11,17,7,11,19,17,7,19,13,13

%N Largest prime factor computed for those odd numbers k for which A156552(k) < k.

%C These primes must stay reasonably small, but how small?

%C See also the example section of A364551.

%H Antti Karttunen, <a href="/A364564/b364564.txt">Table of n, a(n) for n = 1..13739</a>

%F a(n) = A006530(A364561(n)).

%Y Cf. A006530, A156552, A364551, A364561.

%K nonn

%O 1,2

%A _Antti Karttunen_, Jul 28 2023