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 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 6 |
| 7 | 10 |
| 8 | 21 |
| 9 | 38 |
| 10 | 80 |
| 11 | 157 |
| 12 | 336 |
| 13 | 691 |
| 14 | 1493 |
| 15 | 3164 |
| 16 | 6900 |
| 17 | 14880 |
| 18 | 32647 |
| 19 | 71212 |
| 20 | 157069 |
| 21 | 345216 |
| 22 | 764666 |
| 23 | 1689978 |
| 24 | 3756879 |
| 25 | 8338405 |
| 26 | 18593389 |
| 27 | 41410352 |
| 28 | 92583361 |
| 29 | 206790477 |
| 30 | 463400376 |
| 31 | 1037575558 |
| 32 | 2329839141 |
| 33 | 5227759707 |
| 34 | 11759828568 |
| 35 | 26436550400 |