Positive numbers k such that k*(k+1) is a palindrome.

Terms

a(0) =1a(1) =2a(2) =16a(3) =77a(4) =538a(5) =1621a(6) =2457a(7) =5291a(8) =5313a(9) =52008a(10) =142401a(11) =143498a(12) =1610151a(13) =1713543a(14) =4670028a(15) =5218983a(16) =15137566a(17) =15282411a(18) =15814148a(19) =47370058a(20) =50702751a(21) =142594226a(22) =166691108a(23) =1694576061a(24) =2554554552a(25) =25541432472a(26) =47878213558a(27) =77714915542a(28) =155482156418