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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 14 |
| 6 | 28 |
| 7 | 52 |
| 8 | 104 |
| 9 | 206 |
| 10 | 429 |
| 11 | 903 |
| 12 | 1982 |
| 13 | 4430 |
| 14 | 10206 |
| 15 | 23966 |
| 16 | 57522 |
| 17 | 140236 |
| 18 | 347302 |
| 19 | 870682 |
| 20 | 2207819 |
| 21 | 5651437 |
| 22 | 14590703 |
| 23 | 37948338 |
| 24 | 99358533 |
| 25 | 261684141 |
| 26 | 692906575 |
| 27 | 1843601797 |
| 28 | 4926919859 |
| 29 | 13220064562 |
| 30 | 35604359531 |
| 31 | 96218568474 |
| 32 | 260850911485 |