Numbers n such that the sum of the digits of the numbers from 0 to n is a square.

Terms

a(0) =0a(1) =1a(2) =8a(3) =17a(4) =19a(5) =27a(6) =46a(7) =62a(8) =91a(9) =99a(10) =145a(11) =152a(12) =304a(13) =359a(14) =472a(15) =513a(16) =571a(17) =684a(18) =720a(19) =799a(20) =913a(21) =1204a(22) =1232a(23) =1413a(24) =1771a(25) =2599a(26) =2907a(27) =3059a(28) =3509a(29) =3769