A239461(n) / n^2.

Terms

a(0) =11a(1) =21a(2) =31a(3) =401a(4) =501a(5) =601a(6) =701a(7) =801a(8) =901a(9) =10001a(10) =11001a(11) =12001a(12) =13001a(13) =14001a(14) =15001a(15) =16001a(16) =17001a(17) =18001a(18) =19001a(19) =20001a(20) =21001a(21) =22001a(22) =23001a(23) =24001a(24) =25001a(25) =26001a(26) =27001a(27) =28001a(28) =29001a(29) =30001