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 | 4 |
3 | 15 |
4 | 70 |
5 | 360 |
6 | 1953 |
7 | 11008 |
8 | 63837 |
9 | 378390 |
10 | 2282205 |
11 | 13960890 |
12 | 86411232 |
13 | 540166219 |
14 | 3405341160 |
15 | 21625820793 |
16 | 138216775785 |
17 | 888371346825 |
18 | 5738510504979 |
19 | 37234351046835 |
20 | 242567430368298 |
21 | 1585979835198675 |
22 | 10403866383915844 |
23 | 68453912880893025 |