Numbers k such that k^2+k+9 is a palindrome.

Terms

a(0) =0a(1) =1a(2) =9a(3) =11a(4) =13a(5) =22a(6) =30a(7) =31a(8) =138a(9) =300a(10) =304a(11) =305a(12) =331a(13) =438a(14) =969a(15) =1141a(16) =1413a(17) =2367a(18) =3000a(19) =3144a(20) =3881a(21) =9854a(22) =30000a(23) =30605a(24) =72062a(25) =106801a(26) =114141a(27) =125206a(28) =128348a(29) =300000