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 | -6 |
| 4 | 2 |
| 5 | -12 |
| 6 | 23 |
| 7 | -20 |
| 8 | 0 |
| 9 | 14 |
| 10 | 47 |
| 11 | -36 |
| 12 | -27 |
| 13 | -40 |
| 14 | 79 |
| 15 | 102 |
| 16 | 0 |
| 17 | -48 |
| 18 | -81 |
| 19 | -64 |
| 20 | -57 |
| 21 | 174 |
| 22 | 143 |
| 23 | -96 |
| 24 | 10 |
| 25 | 68 |
| 26 | 159 |
| 27 | -24 |
| 28 | -97 |
| 29 | -112 |
| 30 | -517 |
| 31 | -116 |
| 32 | 0 |
| 33 | 314 |
| 34 | 191 |
| 35 | 360 |
| 36 | 170 |
| 37 | -128 |
| 38 | 255 |
| 39 | 350 |
| 40 | 22 |
| 41 | -144 |
| 42 | -885 |
| 43 | -176 |
| 44 | -177 |
| 45 | -400 |
| 46 | 383 |
| 47 | -240 |
| 48 | 0 |
| 49 | 218 |
| 50 | -393 |
| 51 | 414 |
| 52 | -197 |
| 53 | -216 |
| 54 | 211 |
| 55 | 656 |
| 56 | 38 |
| 57 | 566 |
| 58 | 447 |
| 59 | -284 |
| 60 | 947 |
| 61 | -232 |
| 62 | 463 |
| 63 | -696 |
| 64 | 0 |
| 65 | 724 |