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 | 3 |
| 2 | 161 |
| 3 | 2913 |
| 4 | 58160 |
| 5 | 1138331 |
| 6 | 22292709 |
| 7 | 436394066 |
| 8 | 8545589681 |
| 9 | 167325743073 |
| 10 | 3276397352974 |
| 11 | 64154700406471 |
| 12 | 1256205180765473 |
| 13 | 24597599305382336 |
| 14 | 481642558107218459 |
| 15 | 9430983527094262675 |
| 16 | 184666925800707714070 |