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 | 10 |
| 2 | 29 |
| 3 | 76 |
| 4 | 189 |
| 5 | 462 |
| 6 | 1121 |
| 7 | 2712 |
| 8 | 6553 |
| 9 | 15826 |
| 10 | 38213 |
| 11 | 92260 |
| 12 | 222741 |
| 13 | 537750 |
| 14 | 1298249 |
| 15 | 3134256 |
| 16 | 7566769 |
| 17 | 18267802 |
| 18 | 44102381 |
| 19 | 106472572 |
| 20 | 257047533 |
| 21 | 620567646 |
| 22 | 1498182833 |