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 | 3 |
| 4 | 6 |
| 5 | 10 |
| 6 | 15 |
| 7 | 21 |
| 8 | 29 |
| 9 | 46 |
| 10 | 100 |
| 11 | 275 |
| 12 | 781 |
| 13 | 2080 |
| 14 | 5097 |
| 15 | 11562 |
| 16 | 24583 |
| 17 | 49725 |
| 18 | 97376 |
| 19 | 188480 |
| 20 | 368734 |
| 21 | 742811 |
| 22 | 1553192 |
| 23 | 3353332 |
| 24 | 7372536 |
| 25 | 16261025 |
| 26 | 35583926 |
| 27 | 76806997 |
| 28 | 163327279 |
| 29 | 342902007 |
| 30 | 713848316 |
| 31 | 1481274767 |
| 32 | 3078928619 |
| 33 | 6433465844 |
| 34 | 13534471164 |