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 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 14 |
| 5 | 89 |
| 6 | 416 |
| 7 | 1526 |
| 8 | 4740 |
| 9 | 12898 |
| 10 | 31680 |
| 11 | 71527 |
| 12 | 150722 |
| 13 | 299571 |
| 14 | 566592 |
| 15 | 1026524 |
| 16 | 1791528 |
| 17 | 3025188 |
| 18 | 4961280 |
| 19 | 7926621 |
| 20 | 12370710 |
| 21 | 18901069 |
| 22 | 28327904 |
| 23 | 41716466 |
| 24 | 60451820 |
| 25 | 86313734 |
| 26 | 121567680 |
| 27 | 169068835 |
| 28 | 232386570 |
| 29 | 315945319 |
| 30 | 425191040 |
| 31 | 566777976 |
| 32 | 748786896 |