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 | 3 |
| 5 | 3 |
| 6 | 7 |
| 7 | 8 |
| 8 | 17 |
| 9 | 22 |
| 10 | 43 |
| 11 | 62 |
| 12 | 121 |
| 13 | 189 |
| 14 | 361 |
| 15 | 611 |
| 16 | 1161 |
| 17 | 2055 |
| 18 | 3913 |
| 19 | 7154 |
| 20 | 13647 |
| 21 | 25481 |
| 22 | 48733 |
| 23 | 92204 |
| 24 | 176905 |
| 25 | 337593 |
| 26 | 649531 |
| 27 | 1246862 |
| 28 | 2405235 |
| 29 | 4636389 |
| 30 | 8964799 |
| 31 | 17334800 |
| 32 | 33588233 |
| 33 | 65108061 |
| 34 | 126390031 |
| 35 | 245492243 |
| 36 | 477353375 |
| 37 | 928772649 |
| 38 | 1808676325 |