Smallest number whose square has sum of digits A056991(n).

Terms

a(0) =1a(1) =2a(2) =4a(3) =3a(4) =8a(5) =7a(6) =13a(7) =24a(8) =17a(9) =43a(10) =67a(11) =63a(12) =134a(13) =83a(14) =167a(15) =264a(16) =314a(17) =313a(18) =707a(19) =1374a(20) =836a(21) =1667a(22) =2236a(23) =3114a(24) =4472a(25) =6833a(26) =8167a(27) =8937a(28) =16667a(29) =21886