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 | 3 |
| 3 | 8 |
| 4 | 26 |
| 5 | 88 |
| 6 | 340 |
| 7 | 1411 |
| 8 | 6417 |
| 9 | 31474 |
| 10 | 166242 |
| 11 | 939646 |
| 12 | 5659613 |
| 13 | 36158227 |
| 14 | 244049562 |
| 15 | 1733702757 |
| 16 | 12919475840 |
| 17 | 100690425442 |
| 18 | 818554392962 |
| 19 | 6924577964036 |
| 20 | 60828588178031 |
| 21 | 553821749290234 |
| 22 | 5217264062756556 |
| 23 | 50776256646839085 |
| 24 | 509823607380230570 |