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 | 3 |
| 4 | 6 |
| 5 | 11 |
| 6 | 21 |
| 7 | 39 |
| 8 | 74 |
| 9 | 141 |
| 10 | 271 |
| 11 | 521 |
| 12 | 1004 |
| 13 | 1939 |
| 14 | 3756 |
| 15 | 7291 |
| 16 | 14176 |
| 17 | 27599 |
| 18 | 53805 |
| 19 | 105031 |
| 20 | 205268 |
| 21 | 401573 |
| 22 | 786328 |
| 23 | 1541037 |
| 24 | 3022528 |
| 25 | 5932657 |
| 26 | 11652617 |
| 27 | 22901865 |
| 28 | 45037432 |
| 29 | 88616807 |
| 30 | 174454943 |
| 31 | 343606183 |
| 32 | 677074350 |
| 33 | 1334744305 |