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 | 16 |
| 3 | 224 |
| 4 | 2613 |
| 5 | 27458 |
| 6 | 271155 |
| 7 | 2620040 |
| 8 | 25457267 |
| 9 | 251964768 |
| 10 | 2537869322 |
| 11 | 25777827199 |
| 12 | 261509437991 |
| 13 | 2634407279895 |
| 14 | 26321038031960 |
| 15 | 261379965909359 |
| 16 | 2589357329707966 |