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 | 1 |
| 1 | 11 |
| 2 | 112 |
| 3 | 1485 |
| 4 | 19712 |
| 5 | 245707 |
| 6 | 2978208 |
| 7 | 35815001 |
| 8 | 429948928 |
| 9 | 5159721303 |
| 10 | 61917264224 |
| 11 | 743008209637 |
| 12 | 8916100199424 |
| 13 | 106993205007779 |
| 14 | 1283918464011040 |
| 15 | 15407021573826993 |
| 16 | 184884258893987840 |