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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.

A376960 a(n) = least k such that (3n Pi/4)^(2k+1)/(2k+1)! < 1.

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%I A376960 #4 Oct 19 2024 22:13:32
%S A376960 1,2,5,8,11,15,18,21,24,27,30,34,37,40,43,46,50,53,56,59,62,66,69,72,
%T A376960 75,78,82,85,88,91,94,97,101,104,107,110,113,117,120,123,126,129,133,
%U A376960 136,139,142,145,149,152,155,158,161,165,168,171,174,177,181,184
%N A376960 a(n) = least k such that (3n Pi/4)^(2k+1)/(2k+1)! < 1.
%C A376960 The numbers (3n Pi/4)^(2k+1)/(2k+1)!  are the coefficients in the Maclaurin series for sin x when x = 3Pi/4.  If m>a(n), then (n 3Pi/4)^(2k+1)/(2k+1)!  < 1.
%t A376960 a[n_] := Select[Range[z], (3n Pi/4)^(2 # + 1)/(2 # + 1)! < 1 &, 1]
%t A376960 Flatten[Table[a[n], {n, 0, 100}]]
%Y A376960 Cf. A370507, A376284, A376952, A376953, A376954, A376955, A376956, A376957, A376958, A376959.
%K A376960 nonn
%O A376960 0,2
%A A376960 _Clark Kimberling_, Oct 17 2024