A245354 Sum of digits of n in fractional base 9/5.

0, 1, 2, 3, 4, 5, 6, 7, 8, 5, 6, 7, 8, 9, 10, 11, 12, 13, 6, 7, 8, 9, 10, 11, 12, 13, 14, 11, 12, 13, 14, 15, 16, 17, 18, 19, 8, 9, 10, 11, 12, 13, 14, 15, 16, 13, 14, 15, 16, 17, 18, 19, 20, 21, 14, 15, 16, 17, 18, 19, 20, 21, 22, 19, 20, 21, 22, 23

Offset

0,3

Comments

The base 9/5 expansion is unique, and thus the sum of digits function is well-defined.

Links

Table of n, a(n) for n=0..67.

Example

In base 9/5 the number 11 is represented by 52 and so a(11) = 5 + 2 = 7.

Prog

(Sage) # uses [basepqsum from A245355]
[basepqsum(9, 5, y) for y in [0..200]]

Crossrefs

Cf. A024653, A053830, A007953.

Sequence in context: A305902 A245350 A307282 * A097377 A234741 A063917

Adjacent sequences: A245351 A245352 A245353 * A245355 A245356 A245357

Keyword

nonn,base

Author

James Van Alstine, Jul 18 2014

Status

approved