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 | 4 |
| 2 | 6 |
| 3 | 10 |
| 4 | 21 |
| 5 | 46 |
| 6 | 106 |
| 7 | 247 |
| 8 | 579 |
| 9 | 1363 |
| 10 | 3214 |
| 11 | 7586 |
| 12 | 17915 |
| 13 | 42311 |
| 14 | 99931 |
| 15 | 236023 |
| 16 | 557455 |
| 17 | 1316638 |
| 18 | 3109733 |
| 19 | 7344803 |
| 20 | 17347513 |
| 21 | 40972678 |
| 22 | 96772393 |
| 23 | 228564417 |
| 24 | 539840885 |
| 25 | 1275037411 |
| 26 | 3011480697 |
| 27 | 7112745019 |
| 28 | 16799424206 |
| 29 | 39678162637 |
| 30 | 93714913738 |
| 31 | 221343037931 |
| 32 | 522784885426 |
| 33 | 1234753254431 |