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 | 1 |
| 2 | 8 |
| 3 | 50 |
| 4 | 128 |
| 5 | 228 |
| 6 | 9976 |
| 7 | 32768 |
| 8 | 41890 |
| 9 | 47668 |
| 10 | 53064 |
| 11 | 501888 |
| 12 | 564736 |
| 13 | 1207944 |
| 14 | 12026888 |
| 15 | 14697568 |
| 16 | 29720448 |
| 17 | 2147483648 |
| 18 | 2256502784 |
| 19 | 21471264576 |
| 20 | 35929849856 |