A054228 Number of positive integers <= 2^n of form x^2 + 14 y^2.

1, 1, 2, 2, 6, 10, 19, 32, 61, 109, 203, 381, 723, 1371, 2623, 5040, 9711, 18781, 36405, 70710, 137603, 268242, 523655, 1023567, 2002923, 3923596, 7693084, 15097117, 29649512, 58271080, 114596811, 225504427, 443998492, 874651263, 1723852015