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 | 3 |
| 3 | 2 |
| 4 | -3 |
| 5 | -4 |
| 6 | 3 |
| 7 | 6 |
| 8 | -3 |
| 9 | -8 |
| 10 | 3 |
| 11 | 10 |
| 12 | -3 |
| 13 | -12 |
| 14 | 3 |
| 15 | 14 |
| 16 | -3 |
| 17 | -16 |
| 18 | 3 |
| 19 | 18 |
| 20 | -3 |
| 21 | -20 |
| 22 | 3 |
| 23 | 22 |
| 24 | -3 |
| 25 | -24 |
| 26 | 3 |
| 27 | 26 |
| 28 | -3 |
| 29 | -28 |
| 30 | 3 |
| 31 | 30 |
| 32 | -3 |
| 33 | -32 |
| 34 | 3 |
| 35 | 34 |
| 36 | -3 |
| 37 | -36 |
| 38 | 3 |
| 39 | 38 |
| 40 | -3 |
| 41 | -40 |
| 42 | 3 |
| 43 | 42 |
| 44 | -3 |
| 45 | -44 |
| 46 | 3 |
| 47 | 46 |
| 48 | -3 |
| 49 | -48 |
| 50 | 3 |
| 51 | 50 |
| 52 | -3 |
| 53 | -52 |
| 54 | 3 |
| 55 | 54 |
| 56 | -3 |
| 57 | -56 |
| 58 | 3 |
| 59 | 58 |
| 60 | -3 |
| 61 | -60 |
| 62 | 3 |
| 63 | 62 |
| 64 | -3 |
| 65 | -64 |