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 | 27 |
| 2 | 324 |
| 3 | 1586 |
| 4 | 5996 |
| 5 | 20214 |
| 6 | 61953 |
| 7 | 174378 |
| 8 | 454832 |
| 9 | 1108958 |
| 10 | 2547780 |
| 11 | 5554847 |
| 12 | 11564081 |
| 13 | 23107746 |
| 14 | 44519456 |
| 15 | 83011127 |
| 16 | 150287312 |
| 17 | 264917825 |
| 18 | 455762696 |
| 19 | 766835415 |
| 20 | 1264104630 |
| 21 | 2044874898 |
| 22 | 3250558135 |
| 23 | 5083853932 |
| 24 | 7831604260 |