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%I #16 Mar 19 2020 02:20:49
%S 0,1,2,3,4,3,4,5,6,7,4,5,6,7,8,7,8,9,10,11,6,7,8,9,10,7,8,9,10,11,10,
%T 11,12,13,14,7,8,9,10,11,10,11,12,13,14,9,10,11,12,13,10,11,12,13,14,
%U 13,14,15,16,17,8,9,10,11,12,11,12,13,14,15
%N Sum of digits of n written in fractional base 5/3.
%C The base 5/3 expansion is unique and thus the sum of digits function is well-defined.
%e In base 5/3 the number 7 is represented by 32 and so a(7)=3+2=5.
%o (Sage) # uses [basepqsum from A245355]
%o [basepqsum(5,3,y) for y in [0..200]]
%Y Cf. A024633, A007953, A053824.
%K nonn,base
%O 0,3
%A _James Van Alstine_, Jul 18 2014
%E Name corrected by _Bernard Schott_, Mar 18 2020