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 | 7 |
| 3 | 12 |
| 4 | 24 |
| 5 | 121 |
| 6 | 337 |
| 7 | 512 |
| 8 | 722 |
| 9 | 840 |
| 10 | 4704 |
| 11 | 4900 |
| 12 | 23762 |
| 13 | 28560 |
| 14 | 29767 |
| 15 | 166464 |
| 16 | 235224 |
| 17 | 647149 |
| 18 | 970224 |
| 19 | 1940449 |
| 20 | 4920547 |
| 21 | 14070000 |
| 22 | 20346212 |
| 23 | 32959080 |
| 24 | 42508287 |
| 25 | 79346175 |
| 26 | 307546368 |
| 27 | 319311720 |
| 28 | 450982499 |
| 29 | 491756160 |
| 30 | 921166587 |