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 | 9 |
| 5 | 14 |
| 6 | 23 |
| 7 | 43 |
| 8 | 79 |
| 9 | 149 |
| 10 | 263 |
| 11 | 461 |
| 12 | 823 |
| 13 | 1451 |
| 14 | 2549 |
| 15 | 4483 |
| 16 | 7879 |
| 17 | 13859 |
| 18 | 24247 |
| 19 | 42683 |
| 20 | 75037 |
| 21 | 131707 |
| 22 | 230773 |
| 23 | 405401 |
| 24 | 710569 |
| 25 | 1246379 |
| 26 | 2185021 |
| 27 | 3831913 |
| 28 | 6720059 |
| 29 | 11781551 |
| 30 | 20657677 |