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 | 2 |
| 2 | 5 |
| 3 | 11 |
| 4 | 24 |
| 5 | 48 |
| 6 | 96 |
| 7 | 182 |
| 8 | 342 |
| 9 | 624 |
| 10 | 1124 |
| 11 | 1983 |
| 12 | 3462 |
| 13 | 5947 |
| 14 | 10114 |
| 15 | 16993 |
| 16 | 28290 |
| 17 | 46624 |
| 18 | 76225 |
| 19 | 123555 |
| 20 | 198833 |
| 21 | 317627 |
| 22 | 504102 |
| 23 | 794885 |
| 24 | 1246079 |
| 25 | 1942112 |
| 26 | 3010857 |
| 27 | 4643515 |
| 28 | 7126749 |
| 29 | 10886361 |
| 30 | 16555324 |
| 31 | 25067633 |
| 32 | 37801062 |
| 33 | 56776035 |
| 34 | 84951990 |
| 35 | 126643036 |
| 36 | 188127997 |
| 37 | 278507781 |
| 38 | 410949776 |
| 39 | 604437277 |
| 40 | 886284200 |
| 41 | 1295668181 |