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 | 2 |
| 2 | 102 |
| 3 | 41310 |
| 4 | 102690 |
| 5 | 309162 |
| 6 | 315150 |
| 7 | 1000002 |
| 8 | 2488530 |
| 9 | 4564350 |
| 10 | 12679002 |
| 11 | 17166870 |
| 12 | 28855610 |
| 13 | 35049930 |
| 14 | 38982870 |
| 15 | 42176490 |
| 16 | 43232070 |
| 17 | 53288510 |
| 18 | 64253070 |
| 19 | 104439090 |
| 20 | 126446850 |
| 21 | 130659210 |
| 22 | 144379602 |
| 23 | 208313490 |
| 24 | 252852390 |
| 25 | 284335410 |
| 26 | 284397750 |
| 27 | 337122750 |
| 28 | 379257930 |
| 29 | 385659630 |