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 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 6 |
| 7 | 7 |
| 8 | 8 |
| 9 | 9 |
| 10 | 1557 |
| 11 | 1560 |
| 12 | 1614 |
| 13 | 23845695 |
| 14 | 35999937 |
| 15 | 48674232 |
| 16 | 209663697 |
| 17 | 209663703 |
| 18 | 647731785 |
| 19 | 761783484 |
| 20 | 1259500136 |
| 21 | 2625469053 |
| 22 | 3890642833 |
| 23 | 12595001360 |
| 24 | 13126445350 |
| 25 | 26254690530 |
| 26 | 38906428330 |
| 27 | 176590016643 |