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 | 5 |
2 | 20 |
3 | 85 |
4 | 355 |
5 | 1490 |
6 | 6245 |
7 | 26185 |
8 | 109780 |
9 | 460265 |
10 | 1929695 |
11 | 8090410 |
12 | 33919705 |
13 | 142211165 |
14 | 596232020 |
15 | 2499751885 |
16 | 10480415755 |
17 | 43940006690 |
18 | 184222098845 |
19 | 772366329985 |
20 | 3238209484180 |
21 | 13576460102465 |
22 | 56920427728295 |