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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 6 |
| 4 | 11 |
| 5 | 51 |
| 6 | 106 |
| 7 | 492 |
| 8 | 1115 |
| 9 | 5317 |
| 10 | 12912 |
| 11 | 62283 |
| 12 | 159146 |
| 13 | 767083 |
| 14 | 2036260 |
| 15 | 9765849 |
| 16 | 26735811 |
| 17 | 127447531 |
| 18 | 358219288 |
| 19 | 1696410364 |
| 20 | 4879284508 |
| 21 | 22946311567 |
| 22 | 67362378507 |
| 23 | 314520916727 |
| 24 | 940422623222 |
| 25 | 4359165612216 |
| 26 | 13252603911289 |
| 27 | 60989336178364 |
| 28 | 188258217816004 |
| 29 | 860270701616648 |
| 30 | 2692815154387672 |
| 31 | 12220594038311373 |
| 32 | 38750249291035303 |
| 33 | 174684318231133053 |
| 34 | 560585633201038635 |