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a(n) = length(A352575(n)).
4

%I #10 Apr 06 2022 13:23:29

%S 1,2,3,2,4,3,4,5,3,4,5,4,5,4,6,3,5,6,5,4,6,5,6,5,6,4,6,4,7,5,6,7,5,6,

%T 7,5,6,7,5,7,5,7,6,5,7,6,7,6,7,8,5,7,8,5,7,8,6,7,8,6,7,6,7,6,7,6,7,6,

%U 7,8,6,7,8,6,8,5,8,7,8,6,7,8,6,8,6,7,8,6,8,6,8,7,8,7,8,7,8,7,8,6,8,6,9,6,8,9,6,9,6,8,9,6,9,8,7,8,7,8,9,7

%N a(n) = length(A352575(n)).

%C The length of A109812(n) when written in binary.

%H Rémy Sigrist, <a href="/A352576/b352576.txt">Table of n, a(n) for n = 1..10000</a>

%H Rémy Sigrist, <a href="/A352576/a352576.gp.txt">PARI program</a>

%o (PARI) See Links section.

%Y Cf. A109812, A352575.

%K nonn,base

%O 1,2

%A _N. J. A. Sloane_, Apr 06 2022, following a suggestion from _Allan C. Wechsler_.