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) |
|---|---|
| 0 | 0 |
| 1 | 3 |
| 2 | 34 |
| 3 | 651 |
| 4 | 16388 |
| 5 | 500005 |
| 6 | 17915910 |
| 7 | 737894535 |
| 8 | 34359738376 |
| 9 | 1785233613321 |
| 10 | 102400000000010 |
| 11 | 6427501315524619 |
| 12 | 438244169232678924 |
| 13 | 32254987351648575501 |
| 14 | 2548827677619195478030 |
| 15 | 215233605000000000000015 |
| 16 | 19342813113834066795298832 |