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 | 8 |
| 2 | 36 |
| 3 | 156 |
| 4 | 524 |
| 5 | 1552 |
| 6 | 4259 |
| 7 | 10394 |
| 8 | 24183 |
| 9 | 51875 |
| 10 | 106494 |
| 11 | 206745 |
| 12 | 384905 |
| 13 | 687199 |
| 14 | 1183788 |
| 15 | 1963561 |
| 16 | 3173730 |
| 17 | 4927653 |
| 18 | 7548433 |
| 19 | 11034284 |
| 20 | 16135051 |
| 21 | 22312164 |
| 22 | 31309061 |
| 23 | 41115663 |
| 24 | 55583921 |
| 25 | 69539866 |
| 26 | 90846746 |
| 27 | 108550608 |
| 28 | 137370735 |