A225333 Look-and-repeat: similar to look-and-say except frequency is repeated (seed 2).

2, 112, 221112, 222331112, 332223331112, 223332333331112, 222333112553331112, 332333221112225333331112, 223112333222331332115553331112, 222113221112333332223111223112221335333331112

Offset

1,1

Comments

Look-and-repeat sequence A225329 with seed 2.

Contains 1, 2, 3 and 5, but not 4.

All terms end with 2 (the seed) and, starting at the fourth, with 3331112, which makes the 5 appear.

All terms except the second begin with 2 or 3; this is a direct consequence of the look-and-repeat rule.

Links

Table of n, a(n) for n=1..10.

Example

The term after 112 is obtained by saying (repeating) two two 1, one one 2, which gives 221112.

Crossrefs

Cf. A225329 (seed one), A225332 (continuous look-and-repeat, seed 2), A225330, A225331 (continuous look-and-repeat, seed 1).

Cf. A005150 (original look-and-repeat), A225224, A221646, A225212 (continuous look-and-repeat versions).

Sequence in context: A024341 A012528 A024342 * A012525 A165975 A051590

Adjacent sequences: A225330 A225331 A225332 * A225334 A225335 A225336

Keyword

nonn,easy,base

Author

Jean-Christophe Hervé, May 12 2013

Status

approved