OFFSET
1,2
COMMENTS
The sequence is likely to be finite although it contains at least 100000 terms.
Sequence is finite with 4128755 terms, since a(4128754) = 46946449 and a(4128755) = 777000707 have sum 823947156. - Michael S. Branicky, Apr 08 2023
LINKS
Michael S. Branicky, Table of n, a(n) for n = 1..10000
Michael S. Branicky, Python program
Scott R. Shannon, Image of the first 100000 terms. The green line is a(n) = n.
EXAMPLE
a(10) = 20 as a(8) + a(9) = 8 + 9 = 17, and 20 is the smallest unused number that does not contain the digits 1 or 7.
PROG
(Python) # see linked program that generates the full sequence
CROSSREFS
KEYWORD
nonn,base,fini
AUTHOR
Scott R. Shannon, Apr 08 2023
STATUS
approved