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 | 9 |
| 2 | 36 |
| 3 | 153 |
| 4 | 378 |
| 5 | 805 |
| 6 | 1576 |
| 7 | 2733 |
| 8 | 3818 |
| 9 | 5857 |
| 10 | 8006 |
| 11 | 10537 |
| 12 | 14812 |
| 13 | 19389 |
| 14 | 23472 |
| 15 | 29757 |
| 16 | 36416 |
| 17 | 44067 |
| 18 | 52274 |
| 19 | 61307 |
| 20 | 71740 |
| 21 | 86195 |
| 22 | 104056 |
| 23 | 120463 |
| 24 | 138128 |
| 25 | 158209 |
| 26 | 181160 |
| 27 | 205973 |
| 28 | 229728 |
| 29 | 255013 |
| 30 | 281608 |