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 | 39 |
| 2 | 39 |
| 3 | 1521 |
| 4 | 1521 |
| 5 | 144495 |
| 6 | 162583 |
| 7 | 21793395 |
| 8 | 30730023 |
| 9 | 6934356117 |
| 10 | 9808559487 |
| 11 | 2895682234887 |
| 12 | 4474602111861 |
| 13 | 1576942337224917 |