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%I #10 Mar 16 2020 16:38:57
%S 0,1,2,3,4,5,6,7,3,4,5,6,7,8,9,10,6,7,8,9,10,11,12,13,4,5,6,7,8,9,10,
%T 11,7,8,9,10,11,12,13,14,10,11,12,13,14,15,16,17,8,9,10,11,12,13,14,
%U 15,11,12,13,14,15,16,17,18,4,5,6,7,8,9,10,11,7,8,9
%N Sum of digits of n written in fractional base 8/3.
%C The base 8/3 expansion is unique and thus the sum of digits function is well-defined.
%F a(n) = A007953(A053829(n)).
%e In base 8/3 the number 14 is represented by 36 and so a(14) = 3 + 6 = 9.
%o (Sage) # uses [basepqsum from A245355]
%o [basepqsum(8,3,w) for w in [0..200]]
%Y Cf. A007953, A000120, A024645, A053829, A244040.
%K nonn,base
%O 0,3
%A _Hailey R. Olafson_, Jul 18 2014
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