Numbers k such that k^2 + 3*k + 1 is a palindrome.

Terms

a(0) =1a(1) =2a(2) =6a(3) =10a(4) =12a(5) =21a(6) =29a(7) =35a(8) =94a(9) =100a(10) =117a(11) =122a(12) =325a(13) =380a(14) =442a(15) =1000a(16) =1132a(17) =1307a(18) =3073a(19) =10000a(20) =10325a(21) =10602a(22) =12652a(23) =13207a(24) =30404a(25) =30834a(26) =31474a(27) =32672a(28) =95603a(29) =96439