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) |
|---|---|
| 3 | 3 |
| 4 | 12 |
| 5 | 60 |
| 6 | 240 |
| 7 | 756 |
| 8 | 1988 |
| 9 | 4572 |
| 10 | 9495 |
| 11 | 18205 |
| 12 | 32736 |
| 13 | 55848 |
| 14 | 91182 |
| 15 | 143430 |
| 16 | 218520 |
| 17 | 323816 |
| 18 | 468333 |
| 19 | 662967 |
| 20 | 920740 |
| 21 | 1257060 |
| 22 | 1689996 |
| 23 | 2240568 |
| 24 | 2933052 |
| 25 | 3795300 |
| 26 | 4859075 |
| 27 | 6160401 |
| 28 | 7739928 |
| 29 | 9643312 |
| 30 | 11921610 |
| 31 | 14631690 |
| 32 | 17836656 |
| 33 | 21606288 |
| 34 | 26017497 |
| 35 | 31154795 |