Palindromes of form k^2 + k + 6.

Terms

a(0) =6a(1) =8a(2) =606a(3) =656a(4) =818a(5) =83238a(6) =6177716a(7) =6505056a(8) =8343438a(9) =8681868a(10) =834545438a(11) =21543634512a(12) =69872727896a(13) =83456565438a(14) =85425552458