Numbers k such that k and k^2 are the sums of two nonzero squares in exactly two ways.

Terms

a(0) =50a(1) =200a(2) =338a(3) =450a(4) =578a(5) =800a(6) =1352a(7) =1682a(8) =1800a(9) =2312a(10) =2450a(11) =2738a(12) =3042a(13) =3200a(14) =3362a(15) =4050a(16) =5202a(17) =5408a(18) =5618a(19) =6050a(20) =6728a(21) =7200a(22) =7442a(23) =9248a(24) =9800a(25) =10658a(26) =10952a(27) =12168a(28) =12800a(29) =13448