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 | 3 |
3 | 15 |
4 | 105 |
5 | 944 |
6 | 10340 |
7 | 133055 |
8 | 1958060 |
9 | 32279090 |
10 | 586453658 |
11 | 11589971918 |
12 | 246518371679 |
13 | 5594169454700 |
14 | 134456679614850 |
15 | 3402014360391645 |
16 | 90146180439817440 |
17 | 2490533922180210720 |
18 | 71468389947184389600 |
19 | 2123114263550335500000 |