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 | 0 |
| 1 | 1 |
| 2 | 5 |
| 3 | 1 |
| 4 | 11 |
| 5 | 49 |
| 6 | 17 |
| 7 | 115 |
| 8 | 473 |
| 9 | 217 |
| 10 | 1163 |
| 11 | 139 |
| 12 | 2465 |
| 13 | 11491 |
| 14 | 3299 |
| 15 | 26281 |
| 16 | 111611 |
| 17 | 46075 |
| 18 | 269297 |
| 19 | 7153 |
| 20 | 545747 |
| 21 | 2685817 |
| 22 | 588665 |
| 23 | 5960299 |
| 24 | 26269505 |
| 25 | 9492289 |
| 26 | 62031299 |
| 27 | 253202761 |
| 28 | 118985033 |
| 29 | 625390555 |
| 30 | 88519643 |
| 31 | 1339300753 |