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 | 4 |
| 6 | 7 |
| 7 | 12 |
| 8 | 24 |
| 9 | 48 |
| 10 | 107 |
| 11 | 236 |
| 12 | 552 |
| 13 | 1302 |
| 14 | 3160 |
| 15 | 7742 |
| 16 | 19321 |
| 17 | 48630 |
| 18 | 123868 |
| 19 | 317956 |
| 20 | 823066 |
| 21 | 2144506 |
| 22 | 5623757 |
| 23 | 14828075 |
| 24 | 39299898 |
| 25 | 104636891 |
| 26 | 279793451 |
| 27 | 751065461 |
| 28 | 2023443033 |
| 29 | 5469566586 |
| 30 | 14830871803 |
| 31 | 40330829031 |
| 32 | 109972410222 |
| 33 | 300628862481 |