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 | 0 |
| 2 | 2 |
| 3 | 7 |
| 4 | 16 |
| 5 | 32 |
| 6 | 62 |
| 7 | 118 |
| 8 | 221 |
| 9 | 409 |
| 10 | 751 |
| 11 | 1371 |
| 12 | 2492 |
| 13 | 4513 |
| 14 | 8148 |
| 15 | 14674 |
| 16 | 26371 |
| 17 | 47304 |
| 18 | 84717 |
| 19 | 151508 |
| 20 | 270622 |
| 21 | 482849 |
| 22 | 860661 |
| 23 | 1532745 |
| 24 | 2727483 |
| 25 | 4849988 |
| 26 | 8618549 |
| 27 | 15306204 |
| 28 | 27168300 |
| 29 | 48199022 |
| 30 | 85469639 |
| 31 | 151495120 |
| 32 | 268418323 |
| 33 | 475405955 |
| 34 | 841718780 |
| 35 | 1489804565 |
| 36 | 2636091495 |