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 | 2 |
| 3 | 6 |
| 4 | 86 |
| 5 | 2033 |
| 6 | 9617 |
| 7 | 32052 |
| 8 | 439369 |
| 9 | 552012 |
| 10 | 708292 |
| 11 | 849660 |
| 12 | 1869252 |
| 13 | 2038140 |
| 14 | 2083244 |
| 15 | 2350089 |
| 16 | 2569210 |
| 17 | 2930460 |
| 18 | 3875508 |
| 19 | 4973090 |
| 20 | 7248671 |
| 21 | 13864156 |
| 22 | 23500890 |
| 23 | 25516264 |
| 24 | 45711708 |
| 25 | 57226685 |
| 26 | 109512060 |
| 27 | 112389732 |
| 28 | 197121708 |
| 29 | 240926532 |
| 30 | 386807715 |
| 31 | 395172531 |