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 | 2 |
| 3 | 4 |
| 4 | 9 |
| 5 | 16 |
| 6 | 37 |
| 7 | 76 |
| 8 | 160 |
| 9 | 337 |
| 10 | 704 |
| 11 | 1485 |
| 12 | 3110 |
| 13 | 6532 |
| 14 | 13713 |
| 15 | 28784 |
| 16 | 60441 |
| 17 | 126872 |
| 18 | 266368 |
| 19 | 559201 |
| 20 | 1173968 |
| 21 | 2464617 |
| 22 | 5174122 |
| 23 | 10862468 |
| 24 | 22804377 |
| 25 | 47874976 |
| 26 | 100507613 |
| 27 | 211003236 |
| 28 | 442975264 |
| 29 | 929971633 |
| 30 | 1952360368 |
| 31 | 4098738901 |