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 | 1 |
| 2 | 2 |
| 3 | 8 |
| 4 | 74 |
| 5 | 146 |
| 6 | 150 |
| 7 | 158 |
| 8 | 307 |
| 9 | 526 |
| 10 | 541 |
| 11 | 16157 |
| 12 | 20289 |
| 13 | 271343 |
| 14 | 953614 |
| 15 | 1002122 |
| 16 | 2233204 |
| 17 | 3015123 |
| 18 | 15988923 |
| 19 | 48033767 |
| 20 | 85110518238 |