%I #14 Jul 13 2021 06:24:41
%S 2,5,6,10,11,12,17,18,19,20,21,26,27,28,29,30,31,37,38,39,40,41,42,43,
%T 45,46,50,51,52,53,54,55,56,57,61,65,66,67,68,69,70,71,72,73,76,77,82,
%U 83,84,85,86,87,88,89,90,91,92,93,94,97,101,102,103,104,105,106,107
%N Numbers k such that the continued fraction sequence of sqrt(k) is not multiplicative.
%e The continued fraction of sqrt(21) is (4; 1, 1, 2, 1, 1, 8, ...) = A010125, which is not multiplicative since c(2) = 1, c(3) = 2, but c(6) = 8.
%Y Complement of A109054.
%K nonn,easy
%O 1,1
%A _Mitch Harris_, Jun 20 2005