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 | 2 |
| 3 | 2 |
| 4 | 3 |
| 5 | 3 |
| 6 | 77385 |
| 7 | 1447110 |
| 8 | 1447110 |
| 9 | 203937090 |
| 10 | 107290072890 |
| 11 | 4724240531010 |
| 12 | 123618251967210 |
| 13 | 1272603355923900 |
| 14 | 9089306184994125090 |