OFFSET
1,1
LINKS
Zhao Hui Du, Table of n, a(n) for n = 1..45
EXAMPLE
5^2 = 25, so 5 is in the sequence.
15^2 = 225, so 15 is in the sequence.
25^2 = 625, which has a 2 and 5 but also a 6, so 25 is not in the sequence.
MATHEMATICA
Select[5Range[1, 9999, 2], Complement[IntegerDigits[#^2], {2, 5, 7}] == {} &] (* Alonso del Arte, Feb 25 2020 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
EXTENSIONS
Extended and corrected by author 03/2000.
More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 03 2005
STATUS
approved