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 | -16 |
| 4 | 1 |
| 5 | 22 |
| 6 | -3 |
| 7 | -32 |
| 8 | 1 |
| 9 | 38 |
| 10 | -3 |
| 11 | -48 |
| 12 | 1 |
| 13 | 54 |
| 14 | -3 |
| 15 | -64 |
| 16 | 1 |
| 17 | 70 |
| 18 | -3 |
| 19 | -80 |
| 20 | 1 |
| 21 | 86 |
| 22 | -3 |
| 23 | -96 |
| 24 | 1 |
| 25 | 102 |
| 26 | -3 |
| 27 | -112 |
| 28 | 1 |
| 29 | 118 |
| 30 | -3 |
| 31 | -128 |
| 32 | 1 |
| 33 | 134 |
| 34 | -3 |
| 35 | -144 |
| 36 | 1 |
| 37 | 150 |
| 38 | -3 |
| 39 | -160 |
| 40 | 1 |
| 41 | 166 |
| 42 | -3 |
| 43 | -176 |
| 44 | 1 |
| 45 | 182 |
| 46 | -3 |
| 47 | -192 |
| 48 | 1 |
| 49 | 198 |
| 50 | -3 |
| 51 | -208 |
| 52 | 1 |
| 53 | 214 |
| 54 | -3 |
| 55 | -224 |
| 56 | 1 |
| 57 | 230 |
| 58 | -3 |
| 59 | -240 |
| 60 | 1 |
| 61 | 246 |
| 62 | -3 |
| 63 | -256 |
| 64 | 1 |
| 65 | 262 |
| 66 | -3 |