OFFSET
1,2
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
EXAMPLE
131 is in the sequence because it is palindromic as well as an Ulam number (A002858).
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Shyam Sunder Gupta, Feb 20 2010
EXTENSIONS
More terms from Amiram Eldar, Aug 22 2020
STATUS
approved