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 | 3 |
| 3 | 6 |
| 4 | 14 |
| 5 | 25 |
| 6 | 52 |
| 7 | 86 |
| 8 | 160 |
| 9 | 260 |
| 10 | 443 |
| 11 | 688 |
| 12 | 1146 |
| 13 | 1721 |
| 14 | 2716 |
| 15 | 4040 |
| 16 | 6176 |
| 17 | 8975 |
| 18 | 13482 |
| 19 | 19218 |
| 20 | 28167 |
| 21 | 39799 |
| 22 | 57081 |
| 23 | 79503 |
| 24 | 112987 |
| 25 | 155368 |