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 | 2 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 6 |
| 6 | 15 |
| 7 | 38 |
| 8 | 91 |
| 9 | 206 |
| 10 | 443 |
| 11 | 900 |
| 12 | 1701 |
| 13 | 2914 |
| 14 | 4303 |
| 15 | 4748 |
| 16 | 1081 |
| 17 | -14000 |
| 18 | -55335 |
| 19 | -150394 |
| 20 | -346163 |
| 21 | -716966 |
| 22 | -1369429 |
| 23 | -2432788 |
| 24 | -4002993 |
| 25 | -5964748 |
| 26 | -7525017 |
| 27 | -6123026 |
| 28 | 4900093 |
| 29 | 40900520 |
| 30 | 134308945 |
| 31 | 348584680 |
| 32 | 798958751 |
| 33 | 1678213244 |
| 34 | 3277458981 |
| 35 | 5972923998 |
| 36 | 10110994307 |