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 | 44 |
| 2 | 597 |
| 3 | 12110 |
| 4 | 221420 |
| 5 | 4202440 |
| 6 | 78957968 |
| 7 | 1487819051 |
| 8 | 28013761161 |
| 9 | 527589764007 |
| 10 | 9935480401770 |
| 11 | 187107516285853 |
| 12 | 3523634803856570 |
| 13 | 66357694370878682 |
| 14 | 1249658843756374555 |
| 15 | 23533781410865979450 |