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 | 44 |
| 3 | 1121 |
| 4 | 1317 |
| 5 | 1541 |
| 6 | 7644 |
| 7 | 8780 |
| 8 | 10080 |
| 9 | 45621 |
| 10 | 52241 |
| 11 | 59817 |
| 12 | 266960 |
| 13 | 305544 |
| 14 | 349700 |
| 15 | 1557017 |
| 16 | 1781901 |
| 17 | 2039261 |
| 18 | 9076020 |
| 19 | 10386740 |
| 20 | 11886744 |
| 21 | 52899981 |
| 22 | 60539417 |
| 23 | 69282081 |
| 24 | 308324744 |
| 25 | 352850640 |
| 26 | 403806620 |
| 27 | 1797049361 |
| 28 | 2056565301 |
| 29 | 2353558517 |
| 30 | 10473972300 |