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) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | -2 |
| 4 | 1 |
| 5 | -3 |
| 6 | -2 |
| 7 | 1 |
| 8 | -5 |
| 9 | -4 |
| 10 | 1 |
| 11 | 1 |
| 12 | -9 |
| 13 | -10 |
| 14 | 2 |
| 15 | -2 |
| 16 | 1 |
| 17 | -17 |
| 18 | -28 |
| 19 | 4 |
| 20 | -6 |
| 21 | 4 |
| 22 | 1 |
| 23 | -33 |
| 24 | -82 |
| 25 | 8 |
| 26 | -26 |
| 27 | 12 |
| 28 | -2 |
| 29 | 1 |
| 30 | -65 |
| 31 | -244 |
| 32 | 16 |
| 33 | -126 |
| 34 | 50 |
| 35 | -8 |
| 36 | 0 |
| 37 | 1 |
| 38 | -129 |
| 39 | -730 |
| 40 | 32 |
| 41 | -626 |
| 42 | 252 |
| 43 | -50 |
| 44 | 0 |
| 45 | 1 |
| 46 | 1 |
| 47 | -257 |
| 48 | -2188 |
| 49 | 64 |
| 50 | -3126 |
| 51 | 1394 |
| 52 | -344 |
| 53 | 0 |
| 54 | 3 |
| 55 | 4 |
| 56 | 1 |
| 57 | -513 |
| 58 | -6562 |
| 59 | 128 |
| 60 | -15626 |
| 61 | 8052 |
| 62 | -2402 |
| 63 | 0 |
| 64 | 9 |
| 65 | 18 |
| 66 | -2 |