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 | 3 |
| 5 | 7 |
| 6 | 15 |
| 7 | 35 |
| 8 | 81 |
| 9 | 195 |
| 10 | 473 |
| 11 | 1171 |
| 12 | 2924 |
| 13 | 7396 |
| 14 | 18848 |
| 15 | 48446 |
| 16 | 125311 |
| 17 | 326145 |
| 18 | 853188 |
| 19 | 2242616 |
| 20 | 5919197 |
| 21 | 15683008 |
| 22 | 41694334 |
| 23 | 111195166 |
| 24 | 297393668 |
| 25 | 797475499 |
| 26 | 2143631474 |
| 27 | 5775002574 |
| 28 | 15590201095 |
| 29 | 42168292074 |
| 30 | 114260967888 |
| 31 | 310124721255 |
| 32 | 843053354234 |