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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.

A220673 Coefficients of formal series in powers of (tan(x))^2 for tan(5*x)/tan(x).

Table of values

n a(n)
0 5
1 40
2 376
3 3560
4 33720
5 319400
6 3025400
7 28657000
8 271443000
9 2571145000
10 24354235000
11 230686625000
12 2185095075000
13 20697517625000
14 196049700875000
15 1857009420625000
16 17589845701875000
17 166613409915625000
18 1578184870646875000

List of values

[5, 40, 376, 3560, 33720, 319400, 3025400, 28657000, 271443000, 2571145000, 24354235000, 230686625000, 2185095075000, 20697517625000, 196049700875000, 1857009420625000, 17589845701875000, 166613409915625000, 1578184870646875000]

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

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