Palindromes of the form k^2 + 2.

Terms

a(0) =2a(1) =3a(2) =6a(3) =11a(4) =66a(5) =171a(6) =363a(7) =7227a(8) =66566a(9) =154451a(10) =685586a(11) =3279723a(12) =6441446a(13) =8503058a(14) =8916198a(15) =13155131a(16) =20611602a(17) =110313011a(18) =19833933891a(19) =72288388227a(20) =89064046098a(21) =179298892971a(22) =814860068418