Numbers k such that k*(k+3) is a palindrome.

Terms

a(0) =0a(1) =1a(2) =8a(3) =28a(4) =66a(5) =88a(6) =211a(7) =298a(8) =671a(9) =2126a(10) =2998a(11) =28814a(12) =29369a(13) =29998a(14) =63701a(15) =212206a(16) =212671a(17) =299998a(18) =636776a(19) =2122206a(20) =2861419a(21) =2999998a(22) =9443423a(23) =21341691a(24) =28862883a(25) =29999998a(26) =212325206a(27) =289053683a(28) =294127328a(29) =294174669