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 | 5 |
| 2 | 73 |
| 3 | 1348 |
| 4 | 27811 |
| 5 | 612728 |
| 6 | 14103464 |
| 7 | 334974405 |
| 8 | 8146520511 |
| 9 | 201822398131 |
| 10 | 5074951075766 |
| 11 | 129185072614240 |
| 12 | 3322359273912432 |
| 13 | 86191998671455630 |
| 14 | 2252923797781463037 |
| 15 | 59273686760263160137 |
| 16 | 1568440076774389559527 |
| 17 | 41713725234702452284249 |