Squares for which the sum of the digits is a triangular number.

Terms

a(0) =0a(1) =1a(2) =64a(3) =100a(4) =361a(5) =1225a(6) =2116a(7) =3025a(8) =5041a(9) =6400a(10) =10000a(11) =17956a(12) =18496a(13) =21025a(14) =23104a(15) =26569a(16) =29584a(17) =32041a(18) =36100a(19) =38809a(20) =47089a(21) =54289a(22) =58564a(23) =59536a(24) =63001a(25) =68644a(26) =69696a(27) =77284a(28) =82369a(29) =87616