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 | 0 |
3 | 1 |
4 | 0 |
5 | 21 |
6 | 266 |
7 | 2843 |
8 | 55932 |
9 | 884756 |
10 | 13816633 |
11 | 283194588 |
12 | 5375499165 |
13 | 125889124371 |
14 | 3202887665805 |
15 | 80542392920980 |
16 | 2270543992935431 |
17 | 64253268814048352 |
18 | 1892633465941308859 |
19 | 59116753827795287519 |
20 | 1886846993941912938452 |