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 | 28722 |
| 2 | 83752 |
| 3 | 265430 |
| 4 | 864924 |
| 5 | 2816673 |
| 6 | 9169016 |
| 7 | 29577432 |
| 8 | 92530816 |
| 9 | 286454024 |
| 10 | 900260308 |
| 11 | 2873064972 |
| 12 | 9187712072 |
| 13 | 29298245258 |
| 14 | 93413733472 |
| 15 | 297026093532 |
| 16 | 940176646792 |
| 17 | 2973476370798 |
| 18 | 9435365703664 |
| 19 | 30019424281120 |
| 20 | 95485615550472 |