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A245346
Sum of digits of n in fractional base 10/3.
0
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 7, 8, 9
OFFSET
0,3
COMMENTS
The base 10/3 expansion is unique, and thus the sum of digits function is well-defined.
EXAMPLE
In base 10/3 the number 11 is represented by 31 and so a(11) = 3 + 1 = 4.
PROG
(Sage) # uses [basepqsum from A245355]
[basepqsum(10, 3, y) for y in [0..200]]
CROSSREFS
Sequence in context: A061499 A376775 A178051 * A028898 A081502 A236363
KEYWORD
nonn,base
AUTHOR
James Van Alstine, Jul 18 2014
STATUS
approved