Numbers k such that k*(k+5) is a palindrome.

Terms

a(0) =0a(1) =1a(2) =6a(3) =18a(4) =24a(5) =202a(6) =203a(7) =814a(8) =2067a(9) =2178a(10) =2207a(11) =20402a(12) =25116a(13) =64493a(14) =82566a(15) =207067a(16) =2040402a(17) =2187142a(18) =2233097a(19) =6887078a(20) =79585891a(21) =211313148a(22) =249281986a(23) =8161664181a(24) =22222222222a(25) =26331005924a(26) =81294635989