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 | 2187 |
| 1 | 35831808 |
| 2 | 1801088541 |
| 3 | 21870000000 |
| 4 | 137231006679 |
| 5 | 587068342272 |
| 6 | 1954897493193 |
| 7 | 5455160701056 |
| 8 | 13348388671875 |
| 9 | 29509034655744 |
| 10 | 60170087060757 |
| 11 | 114868566764928 |
| 12 | 207616015289871 |
| 13 | 358318080000000 |
| 14 | 594467302491009 |
| 15 | 953133216331392 |
| 16 | 1483273860320763 |
| 17 | 2248392813428736 |