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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 23 |
| 5 | 1 |
| 6 | 1 |
| 7 | 507 |
| 8 | 507 |
| 9 | 1 |
| 10 | 1 |
| 11 | 11155 |
| 12 | 245895 |
| 13 | 11155 |
| 14 | 1 |
| 15 | 1 |
| 16 | 245411 |
| 17 | 119024335 |
| 18 | 119024335 |
| 19 | 245411 |
| 20 | 1 |
| 21 | 1 |
| 22 | 5399043 |
| 23 | 57608023551 |
| 24 | 1267490143415 |
| 25 | 57608023551 |
| 26 | 5399043 |
| 27 | 1 |
| 28 | 1 |
| 29 | 118778947 |
| 30 | 27882288797727 |
| 31 | 13496292655106471 |