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A130890 Number of terms of A061681 having length = n in decimal representation. 1
4, 23, 281, 2825, 28287, 282890, 2828964, 28289682, 282896825 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A055642(a(n)) = n; a(n) / A130901(n) --> 1.

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

a(1)=#{1,2,4,8}=4;

a(2)=#{16,17,18,19,20,22,24,26,28,30,33,36,39,42,46,50,55,60,66,72,79,86,94}=23.

CROSSREFS

Sequence in context: A234595 A327367 A303652 * A138578 A219932 A266919

Adjacent sequences:  A130887 A130888 A130889 * A130891 A130892 A130893

KEYWORD

nonn,base,more

AUTHOR

Reinhard Zumkeller, Jun 08 2007

STATUS

approved

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Last modified December 12 12:30 EST 2019. Contains 329958 sequences. (Running on oeis4.)