Positive numbers of the form x^4 - 6 * x^2 * y^2 + y^4 (where x,y are integers).

Terms

a(0) =28a(1) =41a(2) =161a(3) =448a(4) =476a(5) =656a(6) =721a(7) =956a(8) =1081a(9) =1241a(10) =1393a(11) =2108a(12) =2268a(13) =2576a(14) =3281a(15) =3321a(16) =3713a(17) =3836a(18) =4633a(19) =4681a(20) =5593a(21) =6076a(22) =7168a(23) =7616a(24) =8188a(25) =9401a(26) =9641a(27) =10496a(28) =11536a(29) =11753