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 | 16 |
| 3 | 3348 |
| 4 | 411184 |
| 5 | 5 |
| 6 | 1262796336 |
| 7 | 31415153952 |
| 8 | 128 |
| 9 | 639 |
| 10 | 46402790906782052954848931760 |
| 11 | 9548 |
| 12 | 37884308119951668432 |
| 13 | 507 |
| 14 | 483747841655344 |
| 15 | 2949712546290578068913640 |
| 16 | 368402917173844349535205696 |
| 17 | 3162 |
| 18 | 1149642179207353109724066230688 |