a(1) = 0, then smallest square such that a(n+1) - a(n) is a palindrome.

Terms

a(0) =0a(1) =1a(2) =4a(3) =9a(4) =16a(5) =25a(6) =36a(7) =5041a(8) =5929a(9) =35721a(10) =68644a(11) =69169a(12) =76176a(13) =130321a(14) =214369a(15) =287296a(16) =4368100a(17) =4464769a(18) =11874916a(19) =15000129a(20) =247464361a(21) =593019904a(22) =806787216a(23) =1181090689a(24) =1300323600a(25) =1310367601a(26) =1352400625a(27) =1394499649