Smallest square whose sum of digits is A056991(n).

Terms

a(0) =1a(1) =4a(2) =16a(3) =9a(4) =64a(5) =49a(6) =169a(7) =576a(8) =289a(9) =1849a(10) =4489a(11) =3969a(12) =17956a(13) =6889a(14) =27889a(15) =69696a(16) =98596a(17) =97969a(18) =499849a(19) =1887876a(20) =698896a(21) =2778889a(22) =4999696a(23) =9696996a(24) =19998784a(25) =46689889a(26) =66699889a(27) =79869969a(28) =277788889a(29) =478996996