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 | 29 |
| 2 | 237 |
| 3 | 1113 |
| 4 | 6589 |
| 5 | 34893 |
| 6 | 183341 |
| 7 | 938895 |
| 8 | 4771117 |
| 9 | 24063611 |
| 10 | 120999825 |
| 11 | 606973965 |
| 12 | 3041165657 |
| 13 | 15225030583 |
| 14 | 76186376289 |
| 15 | 381124730885 |
| 16 | 1906242140613 |
| 17 | 9533185117349 |
| 18 | 47672275138133 |
| 19 | 238381757180439 |
| 20 | 1191974407973189 |