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 | 36 |
| 3 | 72 |
| 4 | 144 |
| 5 | 360 |
| 6 | 900 |
| 7 | 2160 |
| 8 | 5184 |
| 9 | 12528 |
| 10 | 30276 |
| 11 | 73080 |
| 12 | 176400 |
| 13 | 425880 |
| 14 | 1028196 |
| 15 | 2482272 |
| 16 | 5992704 |
| 17 | 14467680 |
| 18 | 34928100 |
| 19 | 84323880 |
| 20 | 203575824 |
| 21 | 491475528 |
| 22 | 1186526916 |
| 23 | 2864529360 |
| 24 | 6915585600 |
| 25 | 16695700560 |
| 26 | 40306986756 |
| 27 | 97309674072 |