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A245339 Sum of digits of n written in fractional base 10/9. 0
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 39, 40, 41, 42, 43, 44, 45, 46 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
COMMENTS
The base 10/9 expansion is unique and thus the sum of digits function is well-defined.
LINKS
FORMULA
a(n) = A007953(A024664(n)).
EXAMPLE
In base 10/9 the number 14 is represented by 94 and so a(14) = 9 + 4 = 13.
PROG
(Sage) # uses [basepqsum from A245355]
[basepqsum(10, 9, w) for w in [0..200]]
CROSSREFS
Sequence in context: A081063 A081304 A137721 * A324161 A028904 A081600
KEYWORD
nonn,base
AUTHOR
Hailey R. Olafson, Jul 18 2014
STATUS
approved

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Last modified March 28 16:12 EDT 2024. Contains 371254 sequences. (Running on oeis4.)