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 | 0 |
| 1 | 1 |
| 2 | 4 |
| 3 | 12 |
| 4 | 20 |
| 5 | 52 |
| 6 | 60 |
| 7 | 148 |
| 8 | 196 |
| 9 | 300 |
| 10 | 332 |
| 11 | 780 |
| 12 | 828 |
| 13 | 1904 |
| 14 | 2080 |
| 15 | 2348 |
| 16 | 2812 |
| 17 | 6352 |
| 18 | 6608 |
| 19 | 14736 |
| 20 | 15632 |
| 21 | 17456 |
| 22 | 18640 |
| 23 | 41152 |
| 24 | 42432 |
| 25 | 60912 |
| 26 | 64800 |
| 27 | 80928 |
| 28 | 85408 |
| 29 | 186304 |
| 30 | 187584 |
| 31 | 406400 |
| 32 | 457344 |
| 33 | 497472 |
| 34 | 523456 |
| 35 | 585280 |
| 36 | 596288 |
| 37 | 1284224 |
| 38 | 1348032 |
| 39 | 1457792 |
| 40 | 1495424 |