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 | -1 |
| 2 | -2 |
| 3 | 1 |
| 4 | 6 |
| 5 | 5 |
| 6 | -6 |
| 7 | -15 |
| 8 | -2 |
| 9 | 29 |
| 10 | 34 |
| 11 | -23 |
| 12 | -90 |
| 13 | -43 |
| 14 | 138 |
| 15 | 225 |
| 16 | -50 |
| 17 | -499 |
| 18 | -398 |
| 19 | 601 |
| 20 | 1398 |
| 21 | 197 |
| 22 | -2598 |
| 23 | -2991 |
| 24 | 2206 |
| 25 | 8189 |
| 26 | 3778 |
| 27 | -12599 |
| 28 | -20154 |
| 29 | 5045 |
| 30 | 45354 |
| 31 | 35265 |
| 32 | -55442 |
| 33 | -125971 |
| 34 | -15086 |
| 35 | 236857 |
| 36 | 267030 |
| 37 | -206683 |
| 38 | -740742 |
| 39 | -327375 |
| 40 | 1154110 |
| 41 | 1808861 |
| 42 | -499358 |
| 43 | -4117079 |
| 44 | -3118362 |
| 45 | 5115797 |