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 | 2 |
| 1 | 29 |
| 2 | 541 |
| 3 | 7919 |
| 4 | 104729 |
| 5 | 1299709 |
| 6 | 15485863 |
| 7 | 179424673 |
| 8 | 2038074743 |
| 9 | 22801763489 |
| 10 | 252097800623 |
| 11 | 2760727302517 |
| 12 | 29996224275833 |
| 13 | 323780508946331 |
| 14 | 3475385758524527 |
| 15 | 37124508045065437 |
| 16 | 394906913903735329 |
| 17 | 4185296581467695669 |
| 18 | 44211790234832169331 |