A055955 - OEIS

A055955

a(n) = n - reversal of base 7 digits of n (written in base 10).

0, 0, 0, 0, 0, 0, 0, 6, 0, -6, -12, -18, -24, -30, 12, 6, 0, -6, -12, -18, -24, 18, 12, 6, 0, -6, -12, -18, 24, 18, 12, 6, 0, -6, -12, 30, 24, 18, 12, 6, 0, -6, 36, 30, 24, 18, 12, 6, 0, 48, 0, -48, -96, -144, -192, -240, 48, 0, -48, -96, -144, -192, -240, 48, 0, -48, -96, -144, -192, -240, 48, 0, -48, -96, -144, -192, -240

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,8

COMMENTS

a(n) is a multiple of 6.

LINKS

Table of n, a(n) for n=0..76.

FORMULA

a(n) = n - A030106(n).

MATHEMATICA

Table[n-FromDigits[Reverse[IntegerDigits[n, 7]], 7], {n, 0, 80}] (* Harvey P. Dale, Jul 22 2015 *)

CROSSREFS