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 | 6 |
| 2 | 50 |
| 3 | 225 |
| 4 | 735 |
| 5 | 1960 |
| 6 | 4536 |
| 7 | 9450 |
| 8 | 18150 |
| 9 | 32670 |
| 10 | 55770 |
| 11 | 91091 |
| 12 | 143325 |
| 13 | 218400 |
| 14 | 323680 |
| 15 | 468180 |
| 16 | 662796 |
| 17 | 920550 |
| 18 | 1256850 |
| 19 | 1689765 |
| 20 | 2240315 |
| 21 | 2932776 |
| 22 | 3795000 |
| 23 | 4858750 |
| 24 | 6160050 |
| 25 | 7739550 |
| 26 | 9642906 |
| 27 | 11921175 |
| 28 | 14631225 |
| 29 | 17836160 |
| 30 | 21605760 |
| 31 | 26016936 |
| 32 | 31154200 |