0,3

The base 7/2 expansion is unique and thus the sum of digits function is well-defined.

Table of n, a(n) for n=0..77.

a(n) = A007953(A024639(n)).

In base 7/2 the number 14 is represented by 40 and so a(14) = 4 + 0 = 4.

(Sage) # uses [basepqsum from A245355]

[basepqsum(7, 2, w) for w in [0..200]]

Cf. A007953, A000120, A024639, A053828, A244040.

Sequence in context: A105257 A125937 A173526 * A203580 A043266 A082120

Adjacent sequences: A245339 A245340 A245341 * A245343 A245344 A245345

nonn,base

Hailey R. Olafson, Jul 18 2014

approved