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A336698 a(n) = A000265(1+A000265(sigma(n))), where A000265(k) gives the odd part of k.

%I A336698 #7 Aug 04 2020 23:31:05
%S A336698 1,1,1,1,1,1,1,1,7,5,1,1,1,1,1,1,5,5,3,11,1,5,1,1,1,11,3,1,1,5,1,1,1,
%T A336698 7,1,23,5,1,1,23,11,1,3,11,5,5,1,1,29,47,5,25,7,1,5,1,3,23,1,11,1,1,7,
%U A336698 1,11,5,9,1,1,5,5,49,19,29,1,9,1,11,3,47,61,1,11,1,7,17,1,23,23,59,1,11,1,5,1,1,25
%N A336698 a(n) = A000265(1+A000265(sigma(n))), where A000265(k) gives the odd part of k.
%H A336698 Antti Karttunen, <a href="/A336698/b336698.txt">Table of n, a(n) for n = 1..16384</a>
%H A336698 Antti Karttunen, <a href="/A336698/a336698.txt">Data supplement: n, a(n) computed for n = 1..65537</a>
%H A336698 <a href="/index/Si#SIGMAN">Index entries for sequences related to sigma(n)</a>
%F A336698 a(n) = A000265(1+A000265(A000203(n))) = A000265(1+A161942(n)).
%F A336698 a(A000265(n)) = A336699(n).
%o A336698 (PARI)
%o A336698 A000265(n) = (n>>valuation(n,2));
%o A336698 A336698(n) = A000265(1+A000265(sigma(n)));
%Y A336698 Cf. A000203, A000265, A161942, A336699, A336701.
%K A336698 nonn
%O A336698 1,9
%A A336698 _Antti Karttunen_, Aug 02 2020