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 | 43 |
| 8 | 79 |
| 9 | 173 |
| 10 | 309 |
| 11 | 707 |
| 12 | 1237 |
| 13 | 2917 |
| 14 | 5026 |
| 15 | 12111 |
| 16 | 20626 |
| 17 | 50503 |
| 18 | 85242 |
| 19 | 211263 |
| 20 | 354080 |
| 21 | 885831 |
| 22 | 1476368 |
| 23 | 3720995 |
| 24 | 6173634 |
| 25 | 15652239 |
| 26 | 25873744 |
| 27 | 65913927 |
| 28 | 108628550 |
| 29 | 277822147 |
| 30 | 456710589 |
| 31 | 1171853635 |
| 32 | 1922354351 |