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 | 7 |
| 2 | 54 |
| 3 | 310 |
| 4 | 1380 |
| 5 | 5036 |
| 6 | 15798 |
| 7 | 43958 |
| 8 | 111053 |
| 9 | 259023 |
| 10 | 565010 |
| 11 | 1164062 |
| 12 | 2283094 |
| 13 | 4289830 |
| 14 | 7762060 |
| 15 | 13582916 |
| 16 | 23070101 |
| 17 | 38147395 |
| 18 | 61569710 |
| 19 | 97213302 |
| 20 | 150446614 |
| 21 | 228597390 |
| 22 | 341536652 |
| 23 | 502400112 |
| 24 | 728473703 |
| 25 | 1042269641 |
| 26 | 1472826974 |