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.

A294189 E.g.f.: exp(2*(1/(1-x)^2 - 1)).

Table of values

n a(n)
0 1
1 4
2 28
3 256
4 2848
5 37024
6 547936
7 9064192
8 165339904
9 3290839552
10 70870959616
11 1640130678784
12 40555349598208
13 1066271901822976
14 29684252411219968
15 871864036043259904
16 26931181039027879936
17 872418396180001718272
18 29564373329109844885504

List of values

[1, 4, 28, 256, 2848, 37024, 547936, 9064192, 165339904, 3290839552, 70870959616, 1640130678784, 40555349598208, 1066271901822976, 29684252411219968, 871864036043259904, 26931181039027879936, 872418396180001718272, 29564373329109844885504]

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

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