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A245403 Number of nonnegative integers with property that their base 10/9 expansion (see A024664) has n digits. 0
10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 20, 20, 20, 20, 20, 30, 30, 30, 40, 40, 50, 50, 60, 60, 70, 80, 90, 100, 110, 120, 130, 150, 160, 180, 200, 220, 250, 280, 310, 340, 380, 420, 470, 520, 580, 640, 710, 790, 880, 980, 1090, 1210, 1340, 1490, 1660 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..55.

FORMULA

a(n) = 10*A120202(n).

EXAMPLE

The numbers 10-19 are represented by 90, 91, 92, 93, 94, 95, 96, 97, 98, 99 respectively in base 10/9. These are the only integers with two digits, and so a(2)=10.

PROG

(Sage)

A=[1]

for i in [1..60]:

    A.append(ceil((10-9)/9*sum(A)))

[10*x for x in A]

CROSSREFS

Cf. A024664, A120202, A081848.

Sequence in context: A160941 A070565 A169932 * A091837 A316650 A216875

Adjacent sequences:  A245400 A245401 A245402 * A245404 A245405 A245406

KEYWORD

nonn,base

AUTHOR

James Van Alstine, Jul 21 2014

STATUS

approved

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Last modified April 22 22:38 EDT 2019. Contains 322380 sequences. (Running on oeis4.)