OFFSET
1,1
LINKS
Rémy Sigrist, Table of n, a(n) for n = 1..10000
Rémy Sigrist, PARI program for A331214
EXAMPLE
10 is not in the sequence although 10 + 01 = 11 because 01 starts with a leading 0;
11 is not in the sequence although 11 + 11 = 22 because the second 11 is not distinct from the first one;
12 is in the sequence as 12 + 21 = 33. Etc.
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Eric Angelini, Jan 12 2020
STATUS
approved