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 | 34 |
| 2 | 277 |
| 3 | 9637 |
| 4 | 186414 |
| 5 | 4416695 |
| 6 | 97268701 |
| 7 | 2197847780 |
| 8 | 49208639399 |
| 9 | 1105411581741 |
| 10 | 24801939723742 |
| 11 | 556713719650007 |
| 12 | 12494370307905104 |
| 13 | 280426447918993931 |
| 14 | 6293836975716291709 |
| 15 | 141258681814255369288 |