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 | 1 |
| 2 | 7 |
| 3 | 106 |
| 4 | 2349 |
| 5 | 65078 |
| 6 | 2093770 |
| 7 | 75175383 |
| 8 | 2941004409 |
| 9 | 123442051582 |
| 10 | 5500018250128 |
| 11 | 258162075155942 |
| 12 | 12693904947530988 |
| 13 | 651028563908092621 |
| 14 | 34708995997762871047 |
| 15 | 1918449419812267920842 |
| 16 | 109690826250327197055475 |