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 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 6 |
| 6 | 9 |
| 7 | 14 |
| 8 | 21 |
| 9 | 31 |
| 10 | 48 |
| 11 | 71 |
| 12 | 105 |
| 13 | 159 |
| 14 | 237 |
| 15 | 358 |
| 16 | 538 |
| 17 | 808 |
| 18 | 1212 |
| 19 | 1821 |
| 20 | 2731 |
| 21 | 4098 |
| 22 | 6148 |
| 23 | 9221 |
| 24 | 13829 |
| 25 | 20742 |
| 26 | 31107 |
| 27 | 46672 |
| 28 | 70004 |
| 29 | 104968 |
| 30 | 157463 |
| 31 | 236181 |
| 32 | 354207 |
| 33 | 531340 |
| 34 | 796994 |
| 35 | 1195379 |
| 36 | 1793124 |
| 37 | 2689738 |
| 38 | 4034554 |
| 39 | 6051988 |
| 40 | 9077930 |