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 | 10 |
| 2 | 35 |
| 3 | 462 |
| 4 | 1716 |
| 5 | 12376 |
| 6 | 27132 |
| 7 | 100947 |
| 8 | 20030010 |
| 9 | 7888725 |
| 10 | 38608020 |
| 11 | 1121099408 |
| 12 | 6096454 |
| 13 | 10737573 |
| 14 | 19499099620 |
| 15 | 1119487075980 |
| 16 | 2944827765 |
| 17 | 6522361560 |
| 18 | 461738052776 |
| 19 | 170230452 |
| 20 | 26088783435 |