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 | 5 |
| 4 | 9 |
| 5 | 19 |
| 6 | 25 |
| 7 | 54 |
| 8 | 104 |
| 9 | 112 |
| 10 | 120 |
| 11 | 177 |
| 12 | 317 |
| 13 | 504 |
| 14 | 540 |
| 15 | 734 |
| 16 | 780 |
| 17 | 1649 |
| 18 | 1923 |
| 19 | 2715 |
| 20 | 4308 |
| 21 | 5917 |
| 22 | 6494 |
| 23 | 7305 |
| 24 | 22653 |
| 25 | 26888 |
| 26 | 71448 |
| 27 | 93834 |
| 28 | 137027 |
| 29 | 158472 |
| 30 | 174648 |