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) |
---|---|
1 | 1 |
2 | 2 |
3 | 18 |
4 | 252 |
5 | 4940 |
6 | 124350 |
7 | 3823722 |
8 | 138915560 |
9 | 5822192952 |
10 | 276522143130 |
11 | 14677209803630 |
12 | 860990013672492 |
13 | 55315008281020644 |
14 | 3862656545279925302 |
15 | 291301089508829138130 |
16 | 23595204076694940812880 |
17 | 2042970533426395737658352 |
18 | 188298566037963463789282482 |