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 | 8 |
| 3 | 65 |
| 4 | 571 |
| 5 | 5680 |
| 6 | 52241 |
| 7 | 493941 |
| 8 | 4681376 |
| 9 | 44341381 |
| 10 | 420325171 |
| 11 | 3983969024 |
| 12 | 37773176577 |
| 13 | 358128315977 |
| 14 | 3395458162288 |
| 15 | 32193312416793 |
| 16 | 305234770125411 |
| 17 | 2894031473957664 |
| 18 | 27439272582314225 |
| 19 | 260161002358646165 |