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 | 8 |
| 2 | 64 |
| 3 | 316 |
| 4 | 1901 |
| 5 | 11332 |
| 6 | 65656 |
| 7 | 385700 |
| 8 | 2262261 |
| 9 | 13249261 |
| 10 | 77665756 |
| 11 | 455194656 |
| 12 | 2667688716 |
| 13 | 15634970127 |
| 14 | 91633239536 |
| 15 | 537041598796 |
| 16 | 3147488927460 |
| 17 | 18446758005813 |
| 18 | 108112489924349 |
| 19 | 633624215112740 |
| 20 | 3713535944800748 |