OFFSET
1,2
EXAMPLE
1296 is in the sequence because it is a fourth power (6^4=1296) as well as an Ulam number (A002858).
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Shyam Sunder Gupta, Feb 20 2010
EXTENSIONS
a(7)-a(19) from Amiram Eldar, Aug 22 2020
STATUS
approved