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 | -6 |
| 2 | 3 |
| 3 | 34 |
| 4 | -21 |
| 5 | -66 |
| 6 | -168 |
| 7 | 180 |
| 8 | 645 |
| 9 | 176 |
| 10 | 540 |
| 11 | -3282 |
| 12 | -4265 |
| 13 | -1068 |
| 14 | 5805 |
| 15 | 21226 |
| 16 | 16398 |
| 17 | 27498 |
| 18 | -42993 |
| 19 | -139110 |
| 20 | -199998 |
| 21 | -46374 |
| 22 | 127917 |
| 23 | 467016 |
| 24 | 1424954 |
| 25 | 881958 |
| 26 | 895899 |
| 27 | -2559102 |
| 28 | -5166543 |
| 29 | -9792708 |
| 30 | -11899179 |
| 31 | 5560560 |
| 32 | 13493076 |
| 33 | 39293062 |
| 34 | 65560674 |
| 35 | 94059054 |
| 36 | 14988615 |