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 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 1 |
| 6 | 6 |
| 7 | 1 |
| 8 | 12 |
| 9 | 10 |
| 10 | 30 |
| 11 | 1 |
| 12 | 139 |
| 13 | 1 |
| 14 | 252 |
| 15 | 231 |
| 16 | 920 |
| 17 | 1 |
| 18 | 3780 |
| 19 | 1 |
| 20 | 10250 |
| 21 | 5601 |
| 22 | 32076 |
| 23 | 1 |
| 24 | 149390 |
| 25 | 2126 |
| 26 | 400036 |
| 27 | 173692 |
| 28 | 1475642 |
| 29 | 1 |
| 30 | 6196651 |
| 31 | 1 |
| 32 | 19113136 |
| 33 | 5864915 |
| 34 | 68635494 |
| 35 | 201405 |
| 36 | 289525026 |
| 37 | 1 |
| 38 | 930138540 |
| 39 | 208267554 |
| 40 | 3469290971 |
| 41 | 1 |
| 42 | 14075005210 |
| 43 | 1 |
| 44 | 47994721225 |
| 45 | 7683440470 |