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 | 9 |
| 1 | 81 |
| 2 | 1023 |
| 3 | 9842 |
| 4 | 140743 |
| 5 | 2471826 |
| 6 | 50333399 |
| 7 | 1162263921 |
| 8 | 30000003325 |
| 9 | 855935016215 |
| 10 | 26748301350411 |
| 11 | 908625319783885 |
| 12 | 33336020476682897 |
| 13 | 1313681671142588955 |
| 14 | 55340232221128667935 |
| 15 | 2481720785659010308168 |
| 16 | 118039224225889612744771 |
| 17 | 5935258966980940767393628 |