OFFSET
1,1
LINKS
Lars Blomberg, Table of n, a(n) for n = 1..10000
EXAMPLE
11^2 = 1(2)1, 135^2 = 18(2)25, 285^2 = 81(2)25.
MATHEMATICA
Select[Range[1101], OddQ[len=Length[IntegerDigits[#^2]]]&&Part[IntegerDigits[#^2], (len+1)/2]==2 &] (* Stefano Spezia, Oct 03 2023 *)
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
Lars Blomberg, Dec 22 2016
STATUS
approved