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 | 12 |
| 3 | 48 |
| 4 | -106 |
| 5 | -128 |
| 6 | 8 |
| 7 | 880 |
| 8 | 1041 |
| 9 | -2560 |
| 10 | -2524 |
| 11 | -6720 |
| 12 | 5030 |
| 13 | 30880 |
| 14 | 26696 |
| 15 | 9264 |
| 16 | -136524 |
| 17 | -152456 |
| 18 | -172604 |
| 19 | 37824 |
| 20 | 938316 |
| 21 | 1568960 |
| 22 | 1225624 |
| 23 | -1981904 |
| 24 | -4585531 |
| 25 | -10791440 |
| 26 | -8363184 |
| 27 | 2558560 |
| 28 | 29452194 |
| 29 | 67002976 |
| 30 | 59590976 |
| 31 | 77029104 |
| 32 | -140261287 |
| 33 | -367505912 |
| 34 | -536229932 |