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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.

A367518 Numerators of even-numbered Maclaurin coefficients of sqrt(tan(x)/x).

Table of values

n a(n)
0 1
1 1
2 19
3 55
4 11813
5 2117
6 64604977
7 263101079
8 1768132943
9 9606907803497
10 158812278992229461
11 9112944418860287
12 2117852079027536379043
13 27841657661565660151
14 909416652267282749299777
15 26176589384334728915393123
16 22901449589921151647801250738173
17 514908297269179169530303586629

List of values

[1, 1, 19, 55, 11813, 2117, 64604977, 263101079, 1768132943, 9606907803497, 158812278992229461, 9112944418860287, 2117852079027536379043, 27841657661565660151, 909416652267282749299777, 26176589384334728915393123, 22901449589921151647801250738173, 514908297269179169530303586629]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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