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 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 10 |
| 6 | 29 |
| 7 | 67 |
| 8 | 130 |
| 9 | 276 |
| 10 | 618 |
| 11 | 1351 |
| 12 | 3003 |
| 13 | 6743 |
| 14 | 14819 |
| 15 | 32330 |
| 16 | 71269 |
| 17 | 157307 |
| 18 | 346284 |
| 19 | 763698 |
| 20 | 1684996 |
| 21 | 3710825 |
| 22 | 8172131 |
| 23 | 18012691 |
| 24 | 39696783 |
| 25 | 87466867 |
| 26 | 192761407 |
| 27 | 424805801 |
| 28 | 936047353 |
| 29 | 2062639546 |
| 30 | 4545431460 |
| 31 | 10016441028 |