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 | 4 |
| 4 | 1 |
| 5 | 10 |
| 6 | 50 |
| 7 | 1 |
| 8 | 20 |
| 9 | 175 |
| 10 | 980 |
| 11 | 1 |
| 12 | 35 |
| 13 | 490 |
| 14 | 4116 |
| 15 | 24696 |
| 16 | 1 |
| 17 | 56 |
| 18 | 1176 |
| 19 | 14112 |
| 20 | 116424 |
| 21 | 731808 |
| 22 | 1 |
| 23 | 84 |
| 24 | 2520 |
| 25 | 41580 |
| 26 | 457380 |
| 27 | 3737448 |
| 28 | 24293412 |
| 29 | 1 |
| 30 | 120 |
| 31 | 4950 |
| 32 | 108900 |
| 33 | 1557270 |
| 34 | 16195608 |
| 35 | 131589315 |
| 36 | 877262100 |
| 37 | 1 |
| 38 | 165 |
| 39 | 9075 |
| 40 | 259545 |
| 41 | 4723719 |
| 42 | 61408347 |
| 43 | 614083470 |
| 44 | 4971151900 |
| 45 | 33803832920 |