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 | 2 |
| 3 | 6 |
| 4 | 9 |
| 5 | 15 |
| 6 | 36 |
| 7 | 53 |
| 8 | 78 |
| 9 | 119 |
| 10 | 286 |
| 11 | 401 |
| 12 | 591 |
| 13 | 829 |
| 14 | 1232 |
| 15 | 2910 |
| 16 | 4084 |
| 17 | 5789 |
| 18 | 8070 |
| 19 | 11281 |
| 20 | 15823 |
| 21 | 37747 |
| 22 | 51622 |
| 23 | 72919 |
| 24 | 98986 |
| 25 | 136600 |
| 26 | 181648 |
| 27 | 254638 |
| 28 | 586891 |
| 29 | 799841 |
| 30 | 1110303 |
| 31 | 1495279 |
| 32 | 2018749 |
| 33 | 2657612 |
| 34 | 3552560 |
| 35 | 4738775 |
| 36 | 10857521 |
| 37 | 14560375 |
| 38 | 20061359 |
| 39 | 26603227 |