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 | 5 |
3 | 130 |
4 | 390 |
5 | 585 |
6 | 3250 |
7 | 31980 |
8 | 133250 |
9 | 223860 |
10 | 799500 |
11 | 7195500 |
12 | 13591500 |
13 | 122323500 |
14 | 258238500 |
15 | 394153500 |
16 | 405346500 |
17 | 910630500 |
18 | 1345558500 |
19 | 2025133500 |
20 | 8195674500 |