

A305660


LookandSay sequence in base 3/2.


0



1, 11, 21, 1211, 111221, 2012211, 1210112221, 111211102120211, 2011220110121112101221, 121021221021101112201121110112211, 1112111012112211101221102012210211220110212221
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,2


COMMENTS

Each term has at most 1 zero, 3 ones, and 3 twos in a row.
The first five terms are the same as in LookandSay sequence in base 10: A005150.


LINKS

Table of n, a(n) for n=1..11.
B. Chen, R. Chen, J. Guo, S. Lee et al, On Base 3/2 and its sequences, arXiv:1808.04304 [math.NT], 2018.


EXAMPLE

In base 3/2, the integer 3 is written as 20. Therefore, the next term after 111221 is 2012211: "20 ones, 2 twos, 1 one."


CROSSREFS

Cf. A005150, A024629.
Sequence in context: A063850 A005150 A001388 * A110393 A202627 A257491
Adjacent sequences: A305657 A305658 A305659 * A305661 A305662 A305663


KEYWORD

nonn,base


AUTHOR

Tanya Khovanova and PRIMES STEP Senior group, Jun 07 2018


STATUS

approved



