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 | 66 |
| 2 | 23206 |
| 3 | 645780 |
| 4 | 6715618 |
| 5 | 41008804 |
| 6 | 179213048 |
| 7 | 622300326 |
| 8 | 1827026482 |
| 9 | 4719970500 |
| 10 | 11025201168 |
| 11 | 23740333870 |
| 12 | 47800415256 |
| 13 | 90973748554 |
| 14 | 165038447302 |
| 15 | 287293180292 |
| 16 | 482460245532 |
| 17 | 785043786046 |
| 18 | 1242210635346 |
| 19 | 1917265955424 |