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 | 1 |
| 1 | 7 |
| 2 | 91 |
| 3 | 1435 |
| 4 | 24955 |
| 5 | 460747 |
| 6 | 8859739 |
| 7 | 175466347 |
| 8 | 3553964155 |
| 9 | 73266506635 |
| 10 | 1532152991131 |
| 11 | 32420721097387 |
| 12 | 692865048943291 |
| 13 | 14932919812627915 |
| 14 | 324195908270339035 |
| 15 | 7083228794200550635 |