Concatenations of two squares in two ways.

Terms

a(0) =164a(1) =1441a(2) =1625a(3) =1961a(4) =2564a(5) =4841a(6) =12116a(7) =14449a(8) =16400a(9) =25625a(10) =46241a(11) =48464a(12) =115625a(13) =116641a(14) =144100a(15) =148841a(16) =160025a(17) =162500a(18) =163844a(19) =169169a(20) =184964a(21) =193636a(22) =196100a(23) =256400a(24) =361225a(25) =368649a(26) =466564a(27) =484100a(28) =493025a(29) =961009