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 | 57 |
| 4 | 419 |
| 5 | 3092 |
| 6 | 22846 |
| 7 | 168804 |
| 8 | 1247298 |
| 9 | 9216354 |
| 10 | 68100151 |
| 11 | 503195829 |
| 12 | 3718142208 |
| 13 | 27473561358 |
| 14 | 203003686106 |
| 15 | 1500005624924 |
| 16 | 11083625711271 |
| 17 | 81897532160125 |
| 18 | 605145459495141 |
| 19 | 4471453748222757 |
| 20 | 33039822589391676 |
| 21 | 244133102611731231 |
| 22 | 1803913190804074904 |
| 23 | 13329215764452299411 |