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 A145004 #6 Jul 24 2023 10:46:42 %S A145004 0,3,7,10,13,16,19,22,26,29,32,35,38,41,44,48,51 %N A145004 Values of n at which the number of roots of the function x+n*cos(x) increases. %e A145004 For n=0..2, there is 1 root. For n=3..6, there are 3 roots. For n=7..9, there are 5 roots. etc... So first ranks are 0,3,7,10, ... %Y A145004 Cf. A121381, A004084. %K A145004 nonn %O A145004 0,2 %A A145004 _Sébastien Dumortier_, Sep 28 2008