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 | -24 |
| 2 | 252 |
| 3 | 4830 |
| 4 | -16744 |
| 5 | 534612 |
| 6 | -577738 |
| 7 | -6905934 |
| 8 | 10661420 |
| 9 | 18643272 |
| 10 | 128406630 |
| 11 | -52843168 |
| 12 | -182213314 |
| 13 | 308120442 |
| 14 | -17125708 |
| 15 | 2687348496 |
| 16 | -1596055698 |
| 17 | -5189203740 |
| 18 | 6956478662 |
| 19 | -15481826884 |
| 20 | 9791485272 |
| 21 | 1463791322 |
| 22 | 38116845680 |
| 23 | -29335099668 |
| 24 | -24992917110 |