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 | 11 |
| 2 | 61 |
| 3 | 521 |
| 4 | 9091 |
| 5 | 13421 |
| 6 | 19141 |
| 7 | 61681 |
| 8 | 152381 |
| 9 | 185641 |
| 10 | 224071 |
| 11 | 1151041 |
| 12 | 1824841 |
| 13 | 2031671 |
| 14 | 3341101 |
| 15 | 4778021 |
| 16 | 5200081 |
| 17 | 8987221 |
| 18 | 25058741 |
| 19 | 31224301 |
| 20 | 32928901 |
| 21 | 40454321 |
| 22 | 42521761 |
| 23 | 150451621 |
| 24 | 212601841 |
| 25 | 250062751 |
| 26 | 292268861 |
| 27 | 310565641 |
| 28 | 329708341 |
| 29 | 339604921 |