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 | 1 |
| 2 | 4 |
| 3 | 7 |
| 4 | 24 |
| 5 | 33 |
| 6 | 108 |
| 7 | 135 |
| 8 | 432 |
| 9 | 513 |
| 10 | 1620 |
| 11 | 1863 |
| 12 | 5832 |
| 13 | 6561 |
| 14 | 20412 |
| 15 | 22599 |
| 16 | 69984 |
| 17 | 76545 |
| 18 | 236196 |
| 19 | 255879 |
| 20 | 787320 |
| 21 | 846369 |
| 22 | 2598156 |
| 23 | 2775303 |
| 24 | 8503056 |
| 25 | 9034497 |
| 26 | 27634932 |
| 27 | 29229255 |
| 28 | 89282088 |
| 29 | 94065057 |
| 30 | 286978140 |
| 31 | 301327047 |
| 32 | 918330048 |