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 | 705 |
| 4 | 945 |
| 5 | 5295 |
| 6 | 5775 |
| 7 | 5955 |
| 8 | 6450 |
| 9 | 8580 |
| 10 | 9945 |
| 11 | 11175 |
| 12 | 12120 |
| 13 | 13095 |
| 14 | 18000 |
| 15 | 18525 |
| 16 | 18690 |
| 17 | 19710 |
| 18 | 22440 |
| 19 | 22785 |
| 20 | 24960 |
| 21 | 30390 |
| 22 | 33780 |
| 23 | 34335 |
| 24 | 37665 |
| 25 | 41790 |
| 26 | 44460 |
| 27 | 52185 |
| 28 | 54180 |
| 29 | 56175 |
| 30 | 57300 |
| 31 | 63570 |
| 32 | 66990 |
| 33 | 67515 |
| 34 | 67725 |
| 35 | 73335 |
| 36 | 74700 |