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 | 3 |
| 3 | 5 |
| 4 | 13 |
| 5 | 23 |
| 6 | 55 |
| 7 | 104 |
| 8 | 236 |
| 9 | 470 |
| 10 | 1039 |
| 11 | 2140 |
| 12 | 4712 |
| 13 | 9962 |
| 14 | 21961 |
| 15 | 47484 |
| 16 | 105464 |
| 17 | 232324 |
| 18 | 521338 |
| 19 | 1167825 |
| 20 | 2651453 |
| 21 | 6031136 |
| 22 | 13863054 |
| 23 | 31987058 |
| 24 | 74448415 |
| 25 | 174109134 |
| 26 | 410265423 |
| 27 | 971839195 |
| 28 | 2317827540 |
| 29 | 5558092098 |
| 30 | 13412360692 |
| 31 | 32542049038 |
| 32 | 79424450486 |