Odd palindromes having more divisors than all smaller odd palindromes.

Terms

a(0) =1a(1) =3a(2) =9a(3) =33a(4) =99a(5) =525a(6) =3003a(7) =5445a(8) =5775a(9) =50505a(10) =53235a(11) =171171a(12) =525525a(13) =5073705a(14) =18999981a(15) =50555505a(16) =51666615a(17) =512272215a(18) =513828315a(19) =5026226205a(20) =5053553505a(21) =5184994815a(22) =5708778075a(23) =52252425225a(24) =502299992205a(25) =502875578205a(26) =524241142425a(27) =579024420975