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.

A295258 Expansion of e.g.f. coth(x)*(1 - sqrt(1 - 4*tanh(x)))/2.

Table of values

n a(n)
0 1
1 1
2 4
3 28
4 304
5 4456
6 82144
7 1827568
8 47674624
9 1427337856
10 48248157184
11 1817752215808
12 75534405842944
13 3432099993158656
14 169290181445914624
15 9009094978010165248
16 514518446264601739264
17 31389459744670699257856
18 2037360033664565682110464
19 140182487701223036287909888

List of values

[1, 1, 4, 28, 304, 4456, 82144, 1827568, 47674624, 1427337856, 48248157184, 1817752215808, 75534405842944, 3432099993158656, 169290181445914624, 9009094978010165248, 514518446264601739264, 31389459744670699257856, 2037360033664565682110464, 140182487701223036287909888]

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

Content is available under The OEIS End-User License Agreement.