Numbers such that sum of digits and sum of the square of digits are both a square.

Terms

a(0) =1a(1) =4a(2) =9a(3) =10a(4) =40a(5) =90a(6) =100a(7) =400a(8) =900a(9) =1000a(10) =1111a(11) =1177a(12) =1224a(13) =1242a(14) =1339a(15) =1393a(16) =1422a(17) =1717a(18) =1771a(19) =1933a(20) =2124a(21) =2142a(22) =2214a(23) =2241a(24) =2412a(25) =2421a(26) =3139a(27) =3193a(28) =3319a(29) =3391