OFFSET

0,7

COMMENTS

There is a 2-state automaton that accepts exactly those pairs (n,a(n)) where n is represented in base 9 and a(n) in base 3; see accompanying file a163529.pdf. - Jeffrey Shallit, Aug 10 2023

LINKS

Antti Karttunen, Table of n, a(n) for n = 0..59048

Jeffrey Shallit, Automaton for A163529

CROSSREFS

KEYWORD

nonn,walk

AUTHOR

Antti Karttunen, Aug 01 2009

EXTENSIONS

Name corrected by Kevin Ryde, Aug 28 2020

STATUS

approved