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 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 2 |
| 8 | 8 |
| 9 | 29 |
| 10 | 85 |
| 11 | 211 |
| 12 | 463 |
| 13 | 925 |
| 14 | 1718 |
| 15 | 3017 |
| 16 | 5097 |
| 17 | 8464 |
| 18 | 14197 |
| 19 | 24753 |
| 20 | 45697 |
| 21 | 89150 |
| 22 | 180254 |
| 23 | 368734 |
| 24 | 748924 |
| 25 | 1493990 |
| 26 | 2914906 |
| 27 | 5565127 |
| 28 | 10434412 |
| 29 | 19322901 |
| 30 | 35583926 |
| 31 | 65615746 |
| 32 | 121847272 |
| 33 | 228638698 |
| 34 | 433747259 |
| 35 | 830227401 |
| 36 | 1597653852 |
| 37 | 3078928619 |
| 38 | 5922703731 |
| 39 | 11347651254 |