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 | 3 |
| 3 | 13 |
| 4 | 8 |
| 5 | 52 |
| 6 | 19 |
| 7 | 163 |
| 8 | 361 |
| 9 | 1223 |
| 10 | 1307 |
| 11 | 16477 |
| 12 | 5749 |
| 13 | 83977 |
| 14 | 88267 |
| 15 | 280817 |
| 16 | 147916 |
| 17 | 2754812 |
| 18 | 2839897 |
| 19 | 58552633 |
| 20 | 60492571 |
| 21 | 63263911 |
| 22 | 65468386 |
| 23 | 1612469468 |
| 24 | 549883871 |
| 25 | 579629587 |
| 26 | 596790577 |
| 27 | 1864736021 |
| 28 | 1912541636 |
| 29 | 58587007624 |
| 30 | 59449633388 |
| 31 | 1939984033478 |