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 | 41 |
| 3 | 185 |
| 4 | 13105 |
| 5 | 59473 |
| 6 | 4219673 |
| 7 | 19150025 |
| 8 | 1358721505 |
| 9 | 6166248481 |
| 10 | 437504104841 |
| 11 | 1985512860761 |
| 12 | 140874963037201 |
| 13 | 639328974916465 |
| 14 | 45361300593873785 |
| 15 | 205861944410240873 |
| 16 | 14606197916264321473 |
| 17 | 66286906771122644545 |
| 18 | 4703150367736517640425 |