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

%I #17 Apr 11 2018 02:59:46

%S 2,112,221112,222331112,332223331112,223332333331112,

%T 222333112553331112,332333221112225333331112,

%U 223112333222331332115553331112,222113221112333332223111223112221335333331112

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

%C Look-and-repeat sequence A225329 with seed 2.

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

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

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

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

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

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

%K nonn,easy,base

%O 1,1

%A _Jean-Christophe Hervé_, May 12 2013

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Last modified March 29 09:28 EDT 2024. Contains 371268 sequences. (Running on oeis4.)