A054176 Number of positive integers <= 2^n of form 5 x^2 + 6 y^2.

0, 0, 0, 2, 3, 7, 12, 22, 42, 78, 141, 264, 494, 936, 1778, 3397, 6511, 12523, 24149, 46713, 90531, 175865, 342166, 666693, 1300774, 2541095, 4969243, 9727574, 19059405, 37374922, 73346919, 144042828, 283064512, 556601031, 1095087423