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 | 8 |
| 2 | 22 |
| 3 | 50 |
| 4 | 130 |
| 5 | 338 |
| 6 | 904 |
| 7 | 2444 |
| 8 | 6682 |
| 9 | 18410 |
| 10 | 51052 |
| 11 | 142304 |
| 12 | 398380 |
| 13 | 1119308 |
| 14 | 3154558 |
| 15 | 8914010 |
| 16 | 25246282 |
| 17 | 71644298 |
| 18 | 203665054 |
| 19 | 579841286 |
| 20 | 1653025900 |
| 21 | 4718011460 |
| 22 | 13479908926 |
| 23 | 38548802570 |
| 24 | 110327691316 |
| 25 | 315985475588 |