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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.

A352151 Expansion of e.g.f. 1/(cos(x) - tan(x)).

Table of values

n a(n)
0 1
1 1
2 3
3 14
4 81
5 616
6 5523
7 58064
8 697281
9 9417856
10 141368643
11 2334020864
12 42039523281
13 820296426496
14 17237259945363
15 388087200241664
16 9320064293358081
17 237814050877505536
18 6425096888209255683
19 183232685725482942464
20 5500505587921088841681

List of values

[1, 1, 3, 14, 81, 616, 5523, 58064, 697281, 9417856, 141368643, 2334020864, 42039523281, 820296426496, 17237259945363, 388087200241664, 9320064293358081, 237814050877505536, 6425096888209255683, 183232685725482942464, 5500505587921088841681]

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

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