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) |
|---|---|
| 0 | 1 |
| 1 | -8 |
| 2 | -6 |
| 3 | -48 |
| 4 | 15 |
| 5 | -168 |
| 6 | -26 |
| 7 | -496 |
| 8 | 51 |
| 9 | -1296 |
| 10 | -102 |
| 11 | -3072 |
| 12 | 172 |
| 13 | -6840 |
| 14 | -276 |
| 15 | -14448 |
| 16 | 453 |
| 17 | -29184 |
| 18 | -728 |
| 19 | -56880 |
| 20 | 1128 |
| 21 | -107472 |
| 22 | -1698 |
| 23 | -197616 |
| 24 | 2539 |
| 25 | -354888 |
| 26 | -3780 |
| 27 | -624048 |
| 28 | 5505 |
| 29 | -1076736 |
| 30 | -7882 |
| 31 | -1826416 |
| 32 | 11238 |
| 33 | -3050400 |
| 34 | -15918 |
| 35 | -5022720 |
| 36 | 22259 |
| 37 | -8163152 |
| 38 | -30810 |