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 | 7 |
| 2 | 77 |
| 3 | 1381 |
| 4 | 13648 |
| 5 | 257243 |
| 6 | 3366314 |
| 7 | 43820839 |
| 8 | 766539340 |
| 9 | 9754760605 |
| 10 | 139442821024 |
| 11 | 2170660872648 |
| 12 | 28425049610123 |
| 13 | 428335838522441 |
| 14 | 6234809732594859 |
| 15 | 85273887883266129 |
| 16 | 1280632016847475497 |