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 | 10 |
| 2 | 91 |
| 3 | 756 |
| 4 | 5766 |
| 5 | 40688 |
| 6 | 268108 |
| 7 | 1666000 |
| 8 | 9856552 |
| 9 | 56010096 |
| 10 | 308055528 |
| 11 | 1650607040 |
| 12 | 8641355080 |
| 13 | 44321202192 |
| 14 | 223245029176 |
| 15 | 1106667645872 |
| 16 | 5409040818588 |
| 17 | 26108349881112 |
| 18 | 124618084809174 |
| 19 | 588875653169028 |