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) |
|---|---|
| 3 | 1 |
| 4 | 3 |
| 5 | 9 |
| 6 | 16 |
| 7 | 27 |
| 8 | 46 |
| 9 | 76 |
| 10 | 123 |
| 11 | 207 |
| 12 | 335 |
| 13 | 545 |
| 14 | 882 |
| 15 | 1428 |
| 16 | 2311 |
| 17 | 3740 |
| 18 | 6051 |
| 19 | 9791 |
| 20 | 15842 |
| 21 | 25633 |
| 22 | 41475 |
| 23 | 67108 |
| 24 | 108583 |
| 25 | 175691 |
| 26 | 284274 |
| 27 | 459965 |
| 28 | 744239 |
| 29 | 1204204 |
| 30 | 1948443 |
| 31 | 3152647 |
| 32 | 5101090 |
| 33 | 8253737 |