Numbers k such that k^2 - 1 is a palindrome.

Terms

a(0) =1a(1) =2a(2) =3a(3) =10a(4) =18a(5) =24a(6) =65a(7) =76a(8) =100a(9) =192a(10) =205a(11) =1000a(12) =1748a(13) =1908a(14) =2366a(15) =2967a(16) =5732a(17) =10000a(18) =18992a(19) =20565a(20) =100000a(21) =174602a(22) =174748a(23) =179318a(24) =243064a(25) =293787a(26) =552102a(27) =1000000a(28) =1868288a(29) =2967033