cp's OEIS Frontend

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.

A187071 Expansion of d/dx arctan(x*A001003(x)).

Table of values

n a(n)
0 1
1 2
2 8
3 40
4 206
5 1084
6 5802
7 31440
8 171946
9 947132
10 5247010
11 29203928
12 163176586
13 914744612
14 5142354178
15 28978786976
16 163652047834
17 925925993132
18 5247514156418
19 29783577676840
20 169270380108906
21 963186164033652
22 5486768119272258
23 31286597202864240

List of values

[1, 2, 8, 40, 206, 1084, 5802, 31440, 171946, 947132, 5247010, 29203928, 163176586, 914744612, 5142354178, 28978786976, 163652047834, 925925993132, 5247514156418, 29783577676840, 169270380108906, 963186164033652, 5486768119272258, 31286597202864240]

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

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