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 | 8 |
| 3 | 15 |
| 4 | 95 |
| 5 | 192 |
| 6 | 1183 |
| 7 | 2415 |
| 8 | 14824 |
| 9 | 30305 |
| 10 | 185921 |
| 11 | 380160 |
| 12 | 2332097 |
| 13 | 4768673 |
| 14 | 29253160 |
| 15 | 59817135 |
| 16 | 366944287 |
| 17 | 750331584 |
| 18 | 4602858719 |
| 19 | 9411975375 |
| 20 | 57737128904 |
| 21 | 118061508289 |
| 22 | 724240365697 |
| 23 | 1480934568960 |
| 24 | 9084693297025 |
| 25 | 18576479568193 |
| 26 | 113956161827912 |