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) |
|---|---|
| 3 | 2 |
| 4 | -3 |
| 5 | 15 |
| 6 | -9 |
| 7 | 21 |
| 8 | -15 |
| 9 | -11 |
| 10 | 64 |
| 11 | -56 |
| 12 | 49 |
| 13 | 45 |
| 14 | -39 |
| 15 | -35 |
| 16 | 18 |
| 17 | 124 |
| 18 | -116 |
| 19 | 79 |
| 20 | 75 |
| 21 | -140 |
| 22 | 91 |
| 23 | -71 |
| 24 | -65 |
| 25 | 210 |
| 26 | 105 |
| 27 | -99 |
| 28 | 111 |
| 29 | -105 |
| 30 | -537 |
| 31 | 663 |
| 32 | -119 |
| 33 | 280 |
| 34 | -546 |
| 35 | 606 |
| 36 | -296 |
| 37 | 18 |
| 38 | 175 |
| 39 | -155 |
| 40 | 18 |
| 41 | 364 |
| 42 | -714 |
| 43 | 774 |
| 44 | -189 |
| 45 | 201 |
| 46 | -983 |
| 47 | 72 |
| 48 | 916 |
| 49 | 231 |
| 50 | -225 |
| 51 | -221 |
| 52 | 484 |
| 53 | -954 |
| 54 | 532 |
| 55 | 18 |
| 56 | 18 |