An infinite sequence of 4-digit half-palindromes.

Terms

a(0) =52029a(1) =316725a(2) =1093345a(3) =2811129a(4) =6031029a(5) =11445709a(6) =19879545a(7) =32288625a(8) =49760749a(9) =73515429a(10) =104903889a(11) =145409065a(12) =196645605a(13) =260359869a(14) =338429929a(15) =432865569a(16) =545808285a(17) =679531285a(18) =836439489a(19) =1019069529a(20) =1230089749a(21) =1472300205a(22) =1748632665a(23) =2062150609