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 | 2 |
| 1 | -2 |
| 2 | 3 |
| 3 | -4 |
| 4 | 5 |
| 5 | -5 |
| 6 | 5 |
| 7 | -5 |
| 8 | 7 |
| 9 | -9 |
| 10 | 11 |
| 11 | -10 |
| 12 | 10 |
| 13 | -10 |
| 14 | 14 |
| 15 | -16 |
| 16 | 20 |
| 17 | -19 |
| 18 | 21 |
| 19 | -19 |
| 20 | 26 |
| 21 | -28 |
| 22 | 36 |
| 23 | -31 |
| 24 | 37 |
| 25 | -33 |
| 26 | 48 |
| 27 | -46 |
| 28 | 63 |
| 29 | -52 |
| 30 | 68 |
| 31 | -53 |
| 32 | 82 |
| 33 | -70 |
| 34 | 107 |
| 35 | -78 |
| 36 | 117 |
| 37 | -82 |
| 38 | 145 |
| 39 | -104 |
| 40 | 181 |
| 41 | -113 |
| 42 | 202 |
| 43 | -113 |
| 44 | 244 |
| 45 | -141 |
| 46 | 306 |
| 47 | -149 |
| 48 | 346 |
| 49 | -146 |
| 50 | 419 |
| 51 | -171 |
| 52 | 514 |
| 53 | -171 |
| 54 | 593 |
| 55 | -152 |
| 56 | 714 |
| 57 | -169 |
| 58 | 878 |
| 59 | -143 |
| 60 | 1017 |
| 61 | -87 |
| 62 | 1228 |
| 63 | -64 |
| 64 | 1497 |