Numbers k such that (k-1)^2 + k^2 + (k+1)^2 is a palindrome.

Terms

a(0) =0a(1) =1a(2) =5a(3) =12a(4) =38a(5) =567a(6) =1737a(7) =8340a(8) =16085a(9) =17553a(10) =17933a(11) =36998a(12) =40442a(13) =119812a(14) =173737a(15) =378812a(16) =1328121a(17) =1751497a(18) =1775707a(19) =4427781a(20) =8211880a(21) =17909283a(22) =40439558a(23) =441564381a(24) =828223250a(25) =5602945243a(26) =8227749490a(27) =12900321392a(28) =16028474345a(29) =17552348197