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 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 7 |
| 6 | 14 |
| 7 | 21 |
| 8 | 42 |
| 9 | 49 |
| 10 | 98 |
| 11 | 147 |
| 12 | 294 |
| 13 | 343 |
| 14 | 686 |
| 15 | 1029 |
| 16 | 2058 |
| 17 | 2401 |
| 18 | 4802 |
| 19 | 7203 |
| 20 | 14406 |
| 21 | 16807 |
| 22 | 33614 |
| 23 | 50421 |
| 24 | 100842 |
| 25 | 117649 |
| 26 | 235298 |
| 27 | 352947 |
| 28 | 705894 |
| 29 | 823543 |
| 30 | 1647086 |
| 31 | 2470629 |
| 32 | 4941258 |
| 33 | 5764801 |
| 34 | 11529602 |
| 35 | 17294403 |
| 36 | 34588806 |
| 37 | 40353607 |
| 38 | 80707214 |
| 39 | 121060821 |