A048997 - OEIS

A048997

Sum of digits in decimal expansion of 1/n up to the point where it repeats for the first time.

1, 5, 3, 7, 2, 7, 27, 8, 1, 1, 9, 11, 27, 27, 6, 13, 72, 5, 81, 5, 27, 9, 99, 11, 4, 27, 10, 30, 126, 3, 54, 11, 3, 72, 27, 9, 9, 81, 18, 7, 18, 27, 90, 11, 2, 99, 207, 13, 189, 2, 69, 28, 63, 14, 9, 35, 81, 126, 261, 7, 270, 54, 24, 19, 27, 6, 144, 73, 96, 27, 126, 12, 36, 9, 4

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

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..75.

Index entries for sequences related to decimal expansion of 1/n

EXAMPLE

1/1=1. -> 1; 1/2=.5 ->5; 1/3=.3333... -> 3; 1/4=.25 -> 7; 1/5=.2 ->2; 1/6=.1666... -> 7; 1/7=.142857... -> 27; etc.

MATHEMATICA

Table[Total[Flatten[RealDigits[1/n][[1]]]], {n, 1, 75}] (* Jean-François Alcover, Mar 15 2011 *)

CROSSREFS

Cf. A048962.