Hypotenuses of Pythagorean triples in A195499 and A195503.

Terms

a(0) =5a(1) =17a(2) =65a(3) =241a(4) =901a(5) =3361a(6) =12545a(7) =46817a(8) =174725a(9) =652081a(10) =2433601a(11) =9082321a(12) =33895685a(13) =126500417a(14) =472105985a(15) =1761923521a(16) =6575588101a(17) =24540428881a(18) =91586127425a(19) =341804080817