A349339 - OEIS

%I #5 Nov 16 2021 09:25:48

%S 1,0,1,2,0,3,4,0,5,6,0,7,7,0,9,10,0,8,12,0,13,14,0,15,14,0,17,14,0,19,

%T 20,0,16,22,0,23,24,0,20,26,0,27,22,0,29,24,0,24,32,0,33,34,0,35,36,0,

%U 37,30,0,32,37,0,33,42,0,43,36,0,45,46,0,40,38,0,49,50,0,40,52,0,44,54,0,55,52,0,57,40,0,59

%N Odd bisection of the Möbius transform of A126760.

%F a(n) = A347233(2*n-1).

%o (PARI)

%o A126760(n) = {n&&n\=3^valuation(n, 3)<<valuation(n, 2); n%3+n\6*2}; \\ From A126760

%o A347233(n) = sumdiv(n,d,moebius(n/d)*A126760(d));

%o A349339(n) = A347233(n+n-1);

%Y Cf. A126760, A347233.

%Y Cf. also A072451 (the odd bisection of the Möbius transform of A003602).

%K nonn

%O 1,4

%A _Antti Karttunen_, Nov 16 2021