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 | 19 |
| 2 | 423 |
| 3 | 1786 |
| 4 | 1966 |
| 5 | 4053 |
| 6 | 4235 |
| 7 | 40326 |
| 8 | 45882 |
| 9 | 198823 |
| 10 | 204782 |
| 11 | 442693 |
| 12 | 2131842 |
| 13 | 3911966 |
| 14 | 4061115 |
| 15 | 4081435 |
| 16 | 4603475 |
| 17 | 8789299 |
| 18 | 18027632 |
| 19 | 40987223 |
| 20 | 42647176 |
| 21 | 44100092 |
| 22 | 46097753 |
| 23 | 88776682 |
| 24 | 96439993 |
| 25 | 96540315 |
| 26 | 98954326 |
| 27 | 190349299 |
| 28 | 197967719 |
| 29 | 423185632 |
| 30 | 428896755 |
| 31 | 463968436 |