Numbers k such that k*(k+6) is a palindrome.

Terms

a(0) =0a(1) =1a(2) =5a(3) =22a(4) =137a(5) =273a(6) =715a(7) =863a(8) =2731a(9) =8541a(10) =486618a(11) =877173a(12) =1378507a(13) =1731746a(14) =2273915a(15) =2436099a(16) =5401396a(17) =7153679a(18) =7560069a(19) =14529486a(20) =23887419a(21) =23975475a(22) =73114035a(23) =84890503a(24) =88837611a(25) =235680755a(26) =235769755a(27) =272515513a(28) =440021417a(29) =782357262