A027619 Numbers n such that Hofstadter Q-sequence Q(n) (A005185) satisfies Q(n)=n/2.

2, 50, 56, 128, 156, 166, 208, 238, 272, 308, 336, 392, 474, 476, 512, 618, 658, 666, 710, 734, 836, 868, 1016, 1064, 1376, 1386, 1424, 1432, 1832, 2216, 2280, 2334, 2606, 2638, 2676, 2700, 2740, 2782, 2786, 2912, 2922, 2948, 2954, 3758