Smallest number expressible in the form a^2 + 2b^2, with positive integers a and b, in exactly n ways.
A200977
Smallest number expressible in the form a^2 + 2b^2, with positive integers a and b, in exactly n ways.
Terms
- a(0) =3a(1) =27a(2) =99a(3) =297a(4) =891a(5) =1683a(6) =8019a(7) =5049a(8) =18513a(9) =15147a(10) =649539a(11) =31977a(12) =314721a(13) =136323a(14) =166617a(15) =95931a(16) =10673289a(17) =351747a(18) =64304361a(19) =287793a(20) =1499553a(21) =8450649a(22) =127680201a(23) =863379a(24) =20160657a(25) =99379467a(26) =5979699a(27) =5180274a(28) =1235641473a(29) =3165723
External references
- oeis: A200977