Numbers k such that k^2 + (k+1)^2 is palindromic.

Terms

a(0) =0a(1) =1a(2) =9a(3) =12a(4) =16a(5) =919a(6) =1257a(7) =1262a(8) =1621a(9) =1706a(10) =170706a(11) =904280a(12) =1258182a(13) =7901014a(14) =8659929a(15) =12458597a(16) =17070706a(17) =80472264a(18) =1616689803a(19) =1680689788a(20) =1705387643a(21) =7360311900a(22) =8032814139a(23) =8055329360a(24) =12574461617a(25) =16794058711a(26) =165058650666a(27) =844706005220