A225334 Look-and-repeat: similar to look-and-say except frequency is repeated (seed 3).

3, 113, 221113, 222331113, 332223331113, 223332333331113, 222333112553331113, 332333221112225333331113, 223112333222331332115553331113, 222113221112333332223111223112221335333331113

Offset: 1

Author

Jean-Christophe Hervé, May 12 2013

Keywords

• nonn
• easy
• base

Comments

Look-and-repeat sequence A225329 with seed 3.

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

All terms end with 3 (the seed) and, starting at the fourth, with 3331113, which makes the 5 appear.

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

Sequence A225333, the look-and-repeat sequence with seed 2 is almost the same, differing only in the last digit of each term (2 instead of 3 here). Indeed, any one-digit seed except 1 leads to essentially the same sequence with all terms identical except the last one = the seed.

Examples

			The term after 113 is obtained by saying (repeating) two two 1, one one 3, which gives 221113.
		

Crossrefs

Cf. A225329 (seed one), A225333 (seed two), A225332 (continuous look-and-repeat, seed 2), A225330, A225331 (continuous look-and-repeat, seed 1).

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

Formula

a(n) = A225333(n) + 1.