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.
n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 28 |
4 | 124 |
5 | 848 |
6 | 5312 |
7 | 40080 |
8 | 367632 |
9 | 3132096 |
10 | 27731328 |
11 | 474979008 |
12 | 1130161728 |
13 | 90279554688 |
14 | 268809015168 |
15 | 3005011325952 |
16 | 473192066191104 |
17 | -7913323872693504 |
18 | 186235895195313408 |
19 | 1357401816746159616 |
20 | -181477915903332002304 |
21 | 9552839425392612096000 |