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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 6 |
| 5 | 10 |
| 6 | 21 |
| 7 | 36 |
| 8 | 78 |
| 9 | 153 |
| 10 | 300 |
| 11 | 595 |
| 12 | 1176 |
| 13 | 2346 |
| 14 | 4656 |
| 15 | 9316 |
| 16 | 18528 |
| 17 | 37128 |
| 18 | 74305 |
| 19 | 148240 |
| 20 | 296835 |
| 21 | 593505 |
| 22 | 1186570 |
| 23 | 2372931 |
| 24 | 4744740 |
| 25 | 9489546 |
| 26 | 18975880 |
| 27 | 37953828 |
| 28 | 75909681 |
| 29 | 151806600 |
| 30 | 303626403 |
| 31 | 607243825 |
| 32 | 1214480970 |
| 33 | 2428940451 |