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 | 3 |
| 2 | 9 |
| 3 | 29 |
| 4 | 78 |
| 5 | 207 |
| 6 | 526 |
| 7 | 1284 |
| 8 | 3054 |
| 9 | 7084 |
| 10 | 16071 |
| 11 | 35748 |
| 12 | 78167 |
| 13 | 168195 |
| 14 | 356754 |
| 15 | 746772 |
| 16 | 1544145 |
| 17 | 3157056 |
| 18 | 6387114 |
| 19 | 12795366 |
| 20 | 25397760 |
| 21 | 49977262 |
| 22 | 97542936 |
| 23 | 188912466 |
| 24 | 363196750 |
| 25 | 693424803 |
| 26 | 1315161528 |
| 27 | 2478648920 |
| 28 | 4643337213 |
| 29 | 8648452782 |
| 30 | 16019345259 |
| 31 | 29515269060 |
| 32 | 54104712129 |