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 | 3 |
| 3 | 24 |
| 4 | 102 |
| 5 | 312 |
| 6 | 777 |
| 7 | 1680 |
| 8 | 3276 |
| 9 | 5904 |
| 10 | 9999 |
| 11 | 16104 |
| 12 | 24882 |
| 13 | 37128 |
| 14 | 53781 |
| 15 | 75936 |
| 16 | 104856 |
| 17 | 141984 |
| 18 | 188955 |
| 19 | 247608 |
| 20 | 319998 |
| 21 | 408408 |
| 22 | 515361 |
| 23 | 643632 |
| 24 | 796260 |
| 25 | 976560 |
| 26 | 1188135 |
| 27 | 1434888 |
| 28 | 1721034 |
| 29 | 2051112 |
| 30 | 2429997 |
| 31 | 2862912 |
| 32 | 3355440 |
| 33 | 3913536 |