Squares such that (1) each digit is a square, (2) the sum of squares of the digits is a square.

Terms

a(0) =0a(1) =1a(2) =4a(3) =9a(4) =100a(5) =400a(6) =900a(7) =1444a(8) =10000a(9) =40000a(10) =90000a(11) =144400a(12) =1000000a(13) =4000000a(14) =9000000a(15) =14440000a(16) =94109401a(17) =100000000a(18) =400000000a(19) =900000000a(20) =1444000000a(21) =9410940100a(22) =10000000000a(23) =10100049001a(24) =40000000000a(25) =90000000000a(26) =144400000000a(27) =414441100441a(28) =941094010000