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 | 868 |
| 4 | 28541 |
| 5 | 1108969 |
| 6 | 47735665 |
| 7 | 2200064042 |
| 8 | 106468976628 |
| 9 | 5346274348879 |
| 10 | 276427362685199 |
| 11 | 14638913051219770 |
| 12 | 790954334539356094 |
| 13 | 43473056647367595435 |
| 14 | 2424900281957535784114 |
| 15 | 137007153893707984264455 |