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A071587 Powers of 9 written backwards. 2
1, 9, 18, 927, 1656, 94095, 144135, 9692874, 12764034, 984024783, 1044876843, 90695018313, 184635924282, 9238285681452, 16945429767822, 946490231198502, 1481588810203581, 96566699618177661, 121999692536490051, 9802992767171580531, 10882965095456675121 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Robert Israel, Table of n, a(n) for n = 0..1046

MAPLE

revdigs:= proc(n) local L;

  L:= convert(n, base, 10);

  add(L[-i]*10^(i-1), i=1..nops(L))

end proc:

seq(revdigs(9^n), n=0..50); # Robert Israel, Jan 21 2020

MATHEMATICA

IntegerReverse[9^Range[0, 20]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, May 26 2018 *)

PROG

(PARI) for(i=1, 50, n=9^i; s=ceil(log(n)/log(10)); print1(sum(i=0, s, 10^(s-i-1)*(floor(n/10^i)-10*floor(n/10^(i+1)))), ", "))

CROSSREFS

Sequence in context: A133361 A005400 A134115 * A061750 A107780 A288392

Adjacent sequences:  A071584 A071585 A071586 * A071588 A071589 A071590

KEYWORD

easy,nonn,base

AUTHOR

Benoit Cloitre, Jun 01 2002

STATUS

approved

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Last modified April 16 18:53 EDT 2021. Contains 343050 sequences. (Running on oeis4.)