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 | 5 |
2 | 20 |
3 | 105 |
4 | 520 |
5 | 2580 |
6 | 12945 |
7 | 64680 |
8 | 323320 |
9 | 1616780 |
10 | 8083745 |
11 | 40418380 |
12 | 202092620 |
13 | 1010462480 |
14 | 5052310420 |
15 | 25261556205 |
16 | 126307777920 |
17 | 631538879180 |
18 | 3157694416720 |
19 | 15788472066780 |
20 | 78942360284720 |
21 | 394711801527505 |
22 | 1973559007551520 |
23 | 9867795037511480 |
24 | 49338975188073020 |