OFFSET
1,1
COMMENTS
Problem proposed on French site Diophante (see link).
LINKS
Diophante, A1945 - Concaténations en tous genres (in French).
EXAMPLE
(998+001)^2 = 999^2 = 998001, as x = 998 and y = 001 starts with 0, 998001 is a term.
(30+25)^2 = 55^2 = 3025, here x = 30 but y = 25 does not start with 0, hence 3025 is not a term.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Bernard Schott, Jan 22 2022
STATUS
approved