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 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 3 |
| 7 | 6 |
| 8 | 10 |
| 9 | 18 |
| 10 | 31 |
| 11 | 56 |
| 12 | 96 |
| 13 | 172 |
| 14 | 299 |
| 15 | 530 |
| 16 | 929 |
| 17 | 1646 |
| 18 | 2893 |
| 19 | 5126 |
| 20 | 9044 |
| 21 | 16028 |
| 22 | 28362 |
| 23 | 50328 |
| 24 | 89249 |
| 25 | 158598 |
| 26 | 281830 |
| 27 | 501538 |
| 28 | 892857 |
| 29 | 1591282 |
| 30 | 2837467 |
| 31 | 5064334 |
| 32 | 9044023 |
| 33 | 16163946 |
| 34 | 28906213 |
| 35 | 51729844 |
| 36 | 92628401 |
| 37 | 165967884 |
| 38 | 297541263 |
| 39 | 533731692 |
| 40 | 957921314 |