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 | 673 |
| 2 | 1165921 |
| 3 | 6228961 |
| 4 | 53378329 |
| 5 | 128818873 |
| 6 | 805379161 |
| 7 | 926711449 |
| 8 | 1542173569 |
| 9 | 2459671993 |
| 10 | 8365652929 |
| 11 | 14232980953 |
| 12 | 26484614209 |
| 13 | 30755887321 |
| 14 | 31937961241 |
| 15 | 37968797689 |
| 16 | 78180076129 |
| 17 | 80974979329 |
| 18 | 97835803129 |
| 19 | 168394504129 |
| 20 | 314911422913 |
| 21 | 410879716321 |
| 22 | 529074406681 |