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 | 3 |
| 2 | 45 |
| 3 | 6450 |
| 4 | 18000 |
| 5 | 22785 |
| 6 | 41790 |
| 7 | 54180 |
| 8 | 77385 |
| 9 | 87675 |
| 10 | 98385 |
| 11 | 103005 |
| 12 | 104520 |
| 13 | 151515 |
| 14 | 187005 |
| 15 | 210210 |
| 16 | 244590 |
| 17 | 256620 |
| 18 | 320775 |
| 19 | 329175 |
| 20 | 354795 |
| 21 | 382875 |
| 22 | 387975 |
| 23 | 431385 |
| 24 | 495540 |
| 25 | 509355 |
| 26 | 528510 |
| 27 | 632775 |
| 28 | 763815 |
| 29 | 804870 |
| 30 | 810540 |
| 31 | 812175 |
| 32 | 849285 |