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 | 3 |
| 2 | 9 |
| 3 | 22 |
| 4 | 51 |
| 5 | 106 |
| 6 | 215 |
| 7 | 411 |
| 8 | 766 |
| 9 | 1377 |
| 10 | 2423 |
| 11 | 4154 |
| 12 | 7001 |
| 13 | 11567 |
| 14 | 18834 |
| 15 | 30195 |
| 16 | 47809 |
| 17 | 74735 |
| 18 | 115585 |
| 19 | 176847 |
| 20 | 268064 |
| 21 | 402598 |
| 22 | 599695 |
| 23 | 886116 |
| 24 | 1299808 |
| 25 | 1893115 |
| 26 | 2739248 |
| 27 | 3938491 |
| 28 | 5629407 |
| 29 | 8000431 |
| 30 | 11309295 |
| 31 | 15904003 |
| 32 | 22256183 |
| 33 | 30998479 |
| 34 | 42981170 |
| 35 | 59337604 |