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 | 1 |
2 | 5 |
3 | 20 |
4 | 105 |
5 | 575 |
6 | 3306 |
7 | 19760 |
8 | 121035 |
9 | 757230 |
10 | 4815530 |
11 | 31039402 |
12 | 202335855 |
13 | 1331569725 |
14 | 8834918160 |
15 | 59035907480 |
16 | 396937508816 |
17 | 2683518356850 |
18 | 18230570856710 |
19 | 124390574548960 |
20 | 852074529347120 |
21 | 5857453791938135 |