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 | 1 |
| 2 | 512 |
| 3 | 75025 |
| 4 | 7174454 |
| 5 | 562110290 |
| 6 | 39541748736 |
| 7 | 2610763825782 |
| 8 | 165745451110910 |
| 9 | 10262482704258873 |
| 10 | 625250747214775916 |
| 11 | 37701606156514031251 |
| 12 | 2258713106034310399852 |
| 13 | 134810129909509070121060 |