OFFSET
1,1
LINKS
Lars Blomberg, Table of n, a(n) for n = 1..6075
Peter R. J. Asveld, On a Post's System of Tag. Bulletin of the EATCS 36 (1988), 96-102.
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Sep 04 2017
EXTENSIONS
a(33) and beyond from Lars Blomberg, Apr 19 2018
STATUS
approved