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 | 3 |
| 4 | 6 |
| 5 | 11 |
| 6 | 23 |
| 7 | 47 |
| 8 | 102 |
| 9 | 221 |
| 10 | 493 |
| 11 | 1105 |
| 12 | 2516 |
| 13 | 5763 |
| 14 | 13328 |
| 15 | 30995 |
| 16 | 72556 |
| 17 | 170655 |
| 18 | 403351 |
| 19 | 957135 |
| 20 | 2279948 |
| 21 | 5449013 |
| 22 | 13063596 |
| 23 | 31406517 |
| 24 | 75701508 |
| 25 | 182902337 |
| 26 | 442885683 |
| 27 | 1074604289 |
| 28 | 2612341856 |
| 29 | 6361782007 |
| 30 | 15518343597 |
| 31 | 37912613631 |
| 32 | 92758314874 |