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 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 10 |
| 6 | 10 |
| 7 | 35 |
| 8 | 56 |
| 9 | 126 |
| 10 | 84 |
| 11 | 924 |
| 12 | 462 |
| 13 | 6006 |
| 14 | 4290 |
| 15 | 3432 |
| 16 | 5148 |
| 17 | 58344 |
| 18 | 58344 |
| 19 | 554268 |
| 20 | 554268 |
| 21 | 554268 |
| 22 | 554268 |
| 23 | 6374082 |
| 24 | 6374082 |
| 25 | 21246940 |
| 26 | 21246940 |
| 27 | 52151580 |
| 28 | 34767720 |
| 29 | 924241890 |
| 30 | 504131940 |
| 31 | 15628090140 |
| 32 | 26447537160 |
| 33 | 26447537160 |
| 34 | 15628090140 |