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 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 2 |
| 7 | 4 |
| 8 | 5 |
| 9 | 9 |
| 10 | 14 |
| 11 | 24 |
| 12 | 39 |
| 13 | 69 |
| 14 | 116 |
| 15 | 205 |
| 16 | 357 |
| 17 | 632 |
| 18 | 1118 |
| 19 | 2001 |
| 20 | 3576 |
| 21 | 6445 |
| 22 | 11627 |
| 23 | 21080 |
| 24 | 38293 |
| 25 | 69819 |
| 26 | 127539 |
| 27 | 233644 |
| 28 | 428825 |
| 29 | 788832 |
| 30 | 1453589 |
| 31 | 2683602 |
| 32 | 4962167 |
| 33 | 9190155 |
| 34 | 17044522 |
| 35 | 31655676 |
| 36 | 58866237 |
| 37 | 109600849 |
| 38 | 204293047 |
| 39 | 381212823 |
| 40 | 712073862 |