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 | 5 |
| 2 | 7 |
| 3 | 9 |
| 4 | 15 |
| 5 | 18 |
| 6 | 27 |
| 7 | 36 |
| 8 | 54 |
| 9 | 72 |
| 10 | 108 |
| 11 | 144 |
| 12 | 216 |
| 13 | 288 |
| 14 | 432 |
| 15 | 576 |
| 16 | 864 |
| 17 | 1152 |
| 18 | 1728 |
| 19 | 2304 |
| 20 | 3456 |
| 21 | 4608 |
| 22 | 6912 |
| 23 | 9216 |
| 24 | 13824 |
| 25 | 18432 |
| 26 | 27648 |
| 27 | 36864 |
| 28 | 55296 |
| 29 | 73728 |
| 30 | 110592 |
| 31 | 147456 |
| 32 | 221184 |
| 33 | 294912 |
| 34 | 442368 |
| 35 | 589824 |
| 36 | 884736 |
| 37 | 1179648 |
| 38 | 1769472 |
| 39 | 2359296 |
| 40 | 3538944 |
| 41 | 4718592 |
| 42 | 7077888 |