A243035 Number of entries of length n in A240601.

10, 9, 90, 9, 90, 90, 900, 9, 90, 90, 900, 90, 900, 900, 9000, 9, 90, 90, 900, 90, 900, 900, 9000, 90, 900, 900, 9000, 900, 9000, 9000, 90000, 9, 90, 90, 900, 90, 900, 900, 9000, 90, 900, 900, 9000, 900, 9000, 9000, 90000, 90, 900, 900, 9000, 900, 9000, 9000

Offset

1,1

Comments

For n>0, a(2^n) = 9.

For any base b, a(1) = b, a(2) = b-1, a(3) = b*(b-1), for m>1, a(2m) = a(m), a(2m+1) = b*a(m).

For any base b, a(n) = (b-1)*b^(A000120(n)-1).

Links

Table of n, a(n) for n=1..54.

Formula

a(1) = 10, a(2) = 9, a(3) = 90, For m>1, a(2m) = a(m), a(2m+1) = 10*a(m).

a(n) = 9*10^(A000120(n)-1).

Crossrefs

Cf. A240601, A243036, A000120.

Sequence in context: A217412 A241285 A052196 * A070252 A038311 A244960

Adjacent sequences: A243032 A243033 A243034 * A243036 A243037 A243038

Keyword

nonn,base

Author

Lior Manor, May 29 2014

Status

approved