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 | 20 |
| 2 | 488 |
| 3 | 24236 |
| 4 | 1726412 |
| 5 | 109114568 |
| 6 | 7424366648 |
| 7 | 545678596592 |
| 8 | 41205774636932 |
| 9 | 3234489739234676 |
| 10 | 260643410442091112 |
| 11 | 21446976192435396140 |
| 12 | 1795640886305783918948 |
| 13 | 152542601906447626814216 |
| 14 | 13119246582832293524505360 |