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 | 2 |
3 | 9 |
4 | 56 |
5 | 480 |
6 | 5094 |
7 | 65534 |
8 | 944488 |
9 | 15359184 |
10 | 274118880 |
11 | 5369469072 |
12 | 114055774392 |
13 | 2618129199504 |
14 | 64505645760360 |
15 | 1699067695202040 |
16 | 47625773113856064 |
17 | 1415693345589370368 |
18 | 44474719907550007872 |
19 | 1472352462644660486208 |
20 | 51227002322058534554880 |