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 | 13 |
| 4 | 9 |
| 5 | 101 |
| 6 | 5 |
| 7 | 701 |
| 8 | 49 |
| 9 | 361 |
| 10 | 29 |
| 11 | 31021 |
| 12 | 33 |
| 13 | 204101 |
| 14 | 181 |
| 15 | 1021 |
| 16 | 1889 |
| 17 | 8799541 |
| 18 | 233 |
| 19 | 57746701 |
| 20 | 1361 |
| 21 | 41581 |
| 22 | 7589 |
| 23 | 2486401661 |
| 24 | 1633 |
| 25 | 161532401 |
| 26 | 49661 |
| 27 | 22810681 |
| 28 | 58241 |
| 29 | 702418373381 |
| 30 | 2245 |
| 31 | 4608956945501 |
| 32 | 3437249 |
| 33 | 74991181 |
| 34 | 2135149 |
| 35 | 2802699901 |
| 36 | 75921 |
| 37 | 1302034904649701 |
| 38 | 14007941 |
| 39 | 3219888061 |
| 40 | 3019201 |