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A108047 Concatenation of the previous pair of numbers, with the first two terms both 1. 5
1, 1, 11, 111, 11111, 11111111, 1111111111111, 111111111111111111111, 1111111111111111111111111111111111, 1111111111111111111111111111111111111111111111111111111, 11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

The Fibonacci numbers, A000045, represented in base 1 (see A000042).

LINKS

Table of n, a(n) for n=1..11.

FORMULA

a(n) = (10^A000045(n)-1)/9.

a(n) = A000042(A000045(n)).

EXAMPLE

The third term is 11 which is the concatenation of the first two terms 1 and 1.

CROSSREFS

Column b=1 of A214326.

Column k=1 of A214679.

Cf. A037842, A131293.

Sequence in context: A015468 A037842 A131293 * A144784 A030175 A263805

Adjacent sequences:  A108044 A108045 A108046 * A108048 A108049 A108050

KEYWORD

nonn,easy,base

AUTHOR

Parthasarathy Nambi, Jun 01 2005

EXTENSIONS

Edited by Jason Kimberley, Dec 15 2012

STATUS

approved

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Last modified August 25 02:59 EDT 2019. Contains 326318 sequences. (Running on oeis4.)