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.

A005649 Expansion of e.g.f. (2 - e^x)^(-2).

Table of values

n a(n)
0 1
1 2
2 8
3 44
4 308
5 2612
6 25988
7 296564
8 3816548
9 54667412
10 862440068
11 14857100084
12 277474957988
13 5584100659412
14 120462266974148
15 2772968936479604
16 67843210855558628
17 1757952715142990612
18 48093560991292628228
19 1385244691781856307124

List of values

[1, 2, 8, 44, 308, 2612, 25988, 296564, 3816548, 54667412, 862440068, 14857100084, 277474957988, 5584100659412, 120462266974148, 2772968936479604, 67843210855558628, 1757952715142990612, 48093560991292628228, 1385244691781856307124]

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

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