OFFSET
1,1
LINKS
P. De Geest, Palindromic Squares
MATHEMATICA
Select[Range[2, 122*10^6], PalindromeQ[#]&&OddQ[DivisorSigma[1, #]]&] (* Harvey P. Dale, Aug 01 2020 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
STATUS
approved