A007471 - OEIS

A007471

Sum of digits of n a(n) is n ( = A003634/n), or 0 if no such number exists.
(Formerly M4597)

1, 9, 9, 3, 9, 9, 3, 9, 9, 1, 18, 9, 9, 9, 9, 9, 9, 9, 6, 9, 18, 6, 9, 9, 6, 9, 9, 4, 9, 9, 12, 18, 18, 3, 9, 9, 3, 9, 9, 3, 18, 18, 12, 18, 9, 5, 9, 9, 9, 9, 18, 6, 18, 18, 2, 9, 9, 9, 9, 9, 12, 0, 0, 5, 0, 18, 3, 9, 9, 3, 18, 18, 7, 27, 0, 12, 18

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

OFFSET

1,2

REFERENCES

J. H. Conway, personal communication.

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Table of n, a(n) for n=1..77.

CROSSREFS

Sequence in context: A153505 A088398 A083949 * A180012 A172504 A172502

Adjacent sequences: A007468 A007469 A007470 * A007472 A007473 A007474

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane

EXTENSIONS

Zeros inserted for consistency with A003634 by Sean A. Irvine, Jan 04 2018

STATUS

approved