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 | 3 |
| 2 | 36 |
| 3 | 666 |
| 4 | 14123 |
| 5 | 319156 |
| 6 | 7526024 |
| 7 | 183720802 |
| 8 | 4620831232 |
| 9 | 119279565646 |
| 10 | 3149193338709 |
| 11 | 84781194626719 |
| 12 | 2321280055370071 |
| 13 | 64493788929080253 |
| 14 | 1814933493902398900 |
| 15 | 51651065174273533812 |