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 | 140 |
| 3 | 1719 |
| 4 | 20720 |
| 5 | 248807 |
| 6 | 2985948 |
| 7 | 35831759 |
| 8 | 429981632 |
| 9 | 5159780271 |
| 10 | 61917364124 |
| 11 | 743008370567 |
| 12 | 8916100448112 |
| 13 | 106993205378903 |
| 14 | 1283918464548668 |
| 15 | 15407021574586143 |
| 16 | 184884258895036160 |