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 | 2 |
| 2 | 4 |
| 3 | 9 |
| 4 | 18 |
| 5 | 37 |
| 6 | 70 |
| 7 | 128 |
| 8 | 225 |
| 9 | 383 |
| 10 | 633 |
| 11 | 1019 |
| 12 | 1601 |
| 13 | 2461 |
| 14 | 3711 |
| 15 | 5494 |
| 16 | 8003 |
| 17 | 11484 |
| 18 | 16249 |
| 19 | 22698 |
| 20 | 31328 |
| 21 | 42762 |
| 22 | 57764 |
| 23 | 77274 |
| 24 | 102436 |
| 25 | 134634 |
| 26 | 175532 |
| 27 | 227123 |
| 28 | 291776 |
| 29 | 372300 |
| 30 | 472004 |