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 | 6 |
| 3 | 21 |
| 4 | 56 |
| 5 | 131 |
| 6 | 281 |
| 7 | 556 |
| 8 | 1046 |
| 9 | 1896 |
| 10 | 3346 |
| 11 | 5796 |
| 12 | 9916 |
| 13 | 16806 |
| 14 | 28316 |
| 15 | 47506 |
| 16 | 79476 |
| 17 | 132706 |