OFFSET
1,1
COMMENTS
Each term's number of digits is divisible by 3. (See A316480.)
LINKS
Jon E. Schoenfield, Table of n, a(n) for n = 1..10000
EXAMPLE
12^2 = 144, a 3-digit number whose digit sum is 1+4+4 = 9 = 3*3, so 144 is a term.
360^2 = 129600, a 6-digit number whose digit sum is 1+2+9+6+0+0 = 18 = 3*6, so 129600 is a term.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Jon E. Schoenfield, Jul 04 2018
STATUS
approved