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.

A087981 E.g.f.: exp(-2*x) / (1-x)^2.

Table of values

n a(n)
0 1
1 0
2 2
3 4
4 24
5 128
6 880
7 6816
8 60032
9 589312
10 6384384
11 75630080
12 972387328
13 13483769856
14 200571078656
15 3185540657152
16 53800242216960
17 962741176500224
18 18195808235880448
19 362183230599856128
20 7572922094360723456
21 165945771111208714240
22 3802923921298533384192
23 90965940197460917878784
24 2267151124921333646884864

List of values

[1, 0, 2, 4, 24, 128, 880, 6816, 60032, 589312, 6384384, 75630080, 972387328, 13483769856, 200571078656, 3185540657152, 53800242216960, 962741176500224, 18195808235880448, 362183230599856128, 7572922094360723456, 165945771111208714240, 3802923921298533384192, 90965940197460917878784, 2267151124921333646884864]

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

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