This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A109150 #14 Jul 13 2021 06:24:41 %S A109150 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 A109150 45,46,50,51,52,53,54,55,56,57,61,65,66,67,68,69,70,71,72,73,76,77,82, %U A109150 83,84,85,86,87,88,89,90,91,92,93,94,97,101,102,103,104,105,106,107 %N A109150 Numbers k such that the continued fraction sequence of sqrt(k) is not multiplicative. %e A109150 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 A109150 Complement of A109054. %K A109150 nonn,easy %O A109150 1,1 %A A109150 _Mitch Harris_, Jun 20 2005