OFFSET
1,2
EXAMPLE
a(5) = 335241 = 579^2 contains digits 1,2,3,4 and 5.
CROSSREFS
KEYWORD
nonn,base,more
AUTHOR
Amarnath Murthy, Mar 25 2002
EXTENSIONS
Corrected and extended by Larry Reeves (larryr(AT)acm.org), Jan 20 2003
a(14)-a(15) from Giovanni Resta, Aug 06 2019
a(16)-a(19) from Chai Wah Wu, May 18 2020
STATUS
approved