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 | 5 |
| 2 | 114 |
| 3 | 2712 |
| 4 | 64518 |
| 5 | 1534872 |
| 6 | 36514338 |
| 7 | 868669752 |
| 8 | 20665502358 |
| 9 | 491628707832 |
| 10 | 11695761476178 |
| 11 | 278240131889112 |
| 12 | 6619284357957798 |
| 13 | 157471623931541592 |
| 14 | 3746222552567209218 |
| 15 | 89121983141955313272 |
| 16 | 2120196482644091472438 |
| 17 | 50439105667748418772152 |