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 | 8 |
| 2 | 48 |
| 3 | 512 |
| 4 | 4096 |
| 5 | 30766 |
| 6 | 262144 |
| 7 | 2097152 |
| 8 | 16728064 |
| 9 | 134217728 |
| 10 | 1073741824 |
| 11 | 8587150368 |
| 12 | 68719476736 |
| 13 | 549755813888 |
| 14 | 4397962625024 |
| 15 | 35184372088832 |
| 16 | 281474976710656 |
| 17 | 2251796346117248 |
| 18 | 18014398509481984 |
| 19 | 144115188075855872 |