A108709 Start to read the sequence digit by digit and erase the first "1" you encounter, then the first "2", the first "3", etc., until the first "9"; go on from there and erase again the first "1", the first "2", etc., until "9" -- and so on, cyclically until the end of the (infinite) sequence. Concatenate what is left. The result is the concatenation of all integers of the sequence.

1, 12, 13, 24, 153, 627, 4819, 5132, 6324, 7546, 8789, 9511, 23324, 65362, 74879, 514263, 847516, 879899, 5111213, 24353627, 48695132, 63247546, 87789951, 124324653, 687487951, 1263847596, 8798995112, 13241536274, 83951326324

Offset

1,2

Comments

Fractal-like sequence.

Links

Table of n, a(n) for n=1..29.

Example

Sequence starts: 1 12 13 24 153 627 4819 5132 ... Erasing cyclically digits 1 --> 9 gives: . 1. 1. 2. 1.3 .2. 4.1. 5.3. which is the pattern of the sequence itself.

Crossrefs

Cf. A108710.

Sequence in context: A123132 A050840 A108710 * A138821 A022102 A041292

Adjacent sequences: A108706 A108707 A108708 * A108710 A108711 A108712

Keyword

base,easy,nonn

Author

Eric Angelini, Jun 20 2005

Status

approved