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

Terms

a(0) =0a(1) =1a(2) =2a(3) =5a(4) =19a(5) =23a(6) =60a(7) =71a(8) =175a(9) =179a(10) =184a(11) =243a(12) =753a(13) =2431a(14) =6154a(15) =23111a(16) =30947a(17) =73188a(18) =75146a(19) =230663a(20) =237721a(21) =598350a(22) =3093852a(23) =5492899a(24) =17605724a(25) =18886025a(26) =30909092a(27) =62127180a(28) =76675186a(29) =177865385