%I #16 Sep 21 2019 14:46:32
%S 1,216,361,429,451,599,766,774,775,778,792,793,820,849,863,882,968,
%T 1042,1111,1215,1216,1228,1407,1524,1528,1542,1543,1550,1551,1573,
%U 1653,1672,1673,1674,1675,1863,1905,1920,1938,1954,2078,2185,2186,2187,2195,2196,2277
%N Indices of terms of the Hofstadter Q-sequence (A005185) not used in generating a later term.
%C Each term of the Q-sequence is the sum of two previous terms. This sequence gives the Q-sequence terms which appear never to be used as one of those two. In other words, a(n) != x - A005185(x-1), and a(n) != x - A005185(x-2).
%H Benjamin Chaffin, <a href="/A327284/b327284.txt">Table of n, a(n) for n = 1..10000</a>
%Y Cf. A005185, A076701.
%K nonn
%O 1,2
%A _Benjamin Chaffin_, Sep 15 2019