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 | -3 |
| 2 | 2 |
| 3 | -3 |
| 4 | -22 |
| 5 | 3 |
| 6 | -3 |
| 7 | 122 |
| 8 | -69 |
| 9 | 4 |
| 10 | -3 |
| 11 | -518 |
| 12 | 891 |
| 13 | -156 |
| 14 | 5 |
| 15 | -3 |
| 16 | 1882 |
| 17 | -8709 |
| 18 | 3444 |
| 19 | -295 |
| 20 | 6 |
| 21 | -3 |
| 22 | -6182 |
| 23 | 71931 |
| 24 | -57036 |
| 25 | 9785 |
| 26 | -498 |
| 27 | 7 |
| 28 | -3 |
| 29 | 18906 |
| 30 | -530181 |
| 31 | 789684 |
| 32 | -241095 |
| 33 | 23022 |
| 34 | -777 |
| 35 | 8 |
| 36 | -3 |
| 37 | -54822 |
| 38 | 3598587 |
| 39 | -9661260 |
| 40 | 4919865 |
| 41 | -783378 |
| 42 | 47607 |
| 43 | -1144 |
| 44 | 9 |
| 45 | -3 |
| 46 | 152538 |
| 47 | -22943493 |
| 48 | 107911860 |
| 49 | -87977415 |
| 50 | 21896622 |
| 51 | -2129673 |
| 52 | 89576 |
| 53 | -1611 |
| 54 | 10 |