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 | 0 |
| 2 | 1172 |
| 3 | 9819 |
| 4 | 105585 |
| 5 | 2043848 |
| 6 | 32181643 |
| 7 | 553097760 |
| 8 | 9458629708 |
| 9 | 156841573045 |
| 10 | 2693021176397 |
| 11 | 45330956689241 |
| 12 | 767899918791607 |
| 13 | 13034126338915675 |
| 14 | 220281663367352676 |
| 15 | 3736908224173762193 |
| 16 | 63270418755935977976 |