Least number which is side of n Pythagorean triples.

Terms

a(0) =3a(1) =5a(2) =16a(3) =12a(4) =15a(5) =125a(6) =24a(7) =40a(8) =75a(9) =48a(10) =80a(11) =72a(12) =84a(13) =60a(14) =65536a(15) =192a(16) =144a(17) =524288a(18) =384a(19) =640a(20) =9375a(21) =168a(22) =120a(23) =300a(24) =1536a(25) =520a(26) =576a(27) =3072a(28) =975a(29) =2147483648