login
a(n) = A336699(A163511(n)).
2

%I #7 Jan 03 2024 17:58:14

%S 1,1,1,1,1,7,1,1,1,3,7,1,1,1,1,1,1,61,3,5,7,1,1,29,1,5,1,1,1,1,1,1,1,

%T 23,61,391,3,5,5,13,7,101,1,43,1,29,29,67,1,1,5,1,1,1,1,1,1,7,1,5,1,1,

%U 1,1,1,547,23,977,61,391,391,1401,3,127,5,19,5,13,13,23,7,39,101,221,1,43,43,67,1,371,29,25,29

%N a(n) = A336699(A163511(n)).

%H Antti Karttunen, <a href="/A366894/b366894.txt">Table of n, a(n) for n = 0..16384</a>

%F a(n) = A351565(A324186(n)).

%o (PARI)

%o A163511(n) = if(!n,1,my(p=2, t=1); while(n>1, if(!(n%2), (t*=p), p=nextprime(1+p)); n >>= 1); (t*p));

%o A000265(n) = (n>>valuation(n,2));

%o A336699(n) = A000265(1+A000265(sigma(A000265(n))));

%o A366894(n) = A336699(A163511(n));

%Y Cf. A000265, A000593, A163511, A324186, A336699, A351565, A366895 (rgs-transform).

%K nonn

%O 0,6

%A _Antti Karttunen_, Jan 03 2024