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 | 6 |
| 4 | 8 |
| 5 | 44 |
| 6 | 10 |
| 7 | 328 |
| 8 | 56 |
| 9 | 408 |
| 10 | 76 |
| 11 | 18272 |
| 12 | 52 |
| 13 | 136384 |
| 14 | 568 |
| 15 | 3856 |
| 16 | 3104 |
| 17 | 7598336 |
| 18 | 424 |
| 19 | 56714752 |
| 20 | 2896 |
| 21 | 215104 |
| 22 | 31648 |
| 23 | 3159738368 |
| 24 | 3088 |
| 25 | 536013824 |
| 26 | 236224 |
| 27 | 71910912 |
| 28 | 161344 |
| 29 | 1313964867584 |
| 30 | 2320 |
| 31 | 9807567290368 |
| 32 | 9634304 |
| 33 | 667730944 |
| 34 | 13160704 |
| 35 | 37860806656 |
| 36 | 172864 |
| 37 | 4078438577864704 |
| 38 | 98232832 |
| 39 | 37201186816 |
| 40 | 9584896 |