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) |
|---|---|
| 3 | 1 |
| 4 | 7 |
| 5 | 31 |
| 6 | 101 |
| 7 | 272 |
| 8 | 636 |
| 9 | 1340 |
| 10 | 2600 |
| 11 | 4725 |
| 12 | 8135 |
| 13 | 13391 |
| 14 | 21217 |
| 15 | 32536 |
| 16 | 48496 |
| 17 | 70512 |
| 18 | 100296 |
| 19 | 139905 |
| 20 | 191775 |
| 21 | 258775 |
| 22 | 344245 |
| 23 | 452056 |
| 24 | 586652 |
| 25 | 753116 |
| 26 | 957216 |
| 27 | 1205477 |
| 28 | 1505231 |
| 29 | 1864695 |
| 30 | 2293025 |
| 31 | 2800400 |
| 32 | 3398080 |
| 33 | 4098496 |
| 34 | 4915312 |