OFFSET
1,2
COMMENTS
Start with 1; always choose smallest number which has not yet appeared.
It is conjectured that every number appears.
LINKS
Jon E. Schoenfield and Reinhard Zumkeller, Table of n, a(n) for n = 1..100000 (First 10000 terms from Jon E. Schoenfield)
Jon E. Schoenfield, Illustration of initial terms
Jon E. Schoenfield, Graph of first 18000 terms
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Apr 21 2015
EXTENSIONS
Corrected and extended by Jon E. Schoenfield, Apr 23 2015
STATUS
approved