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 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 4 |
| 5 | 1 |
| 6 | 9 |
| 7 | -1 |
| 8 | 15 |
| 9 | -7 |
| 10 | 20 |
| 11 | -15 |
| 12 | 23 |
| 13 | -28 |
| 14 | 23 |
| 15 | -43 |
| 16 | 20 |
| 17 | -61 |
| 18 | 11 |
| 19 | -80 |
| 20 | -2 |
| 21 | -100 |
| 22 | -21 |
| 23 | -119 |
| 24 | -46 |
| 25 | -137 |
| 26 | -76 |
| 27 | -151 |
| 28 | -111 |
| 29 | -162 |
| 30 | -150 |
| 31 | -167 |
| 32 | -194 |
| 33 | -167 |
| 34 | -240 |
| 35 | -161 |
| 36 | -289 |
| 37 | -147 |
| 38 | -339 |
| 39 | -125 |
| 40 | -389 |
| 41 | -95 |
| 42 | -437 |
| 43 | -57 |
| 44 | -484 |
| 45 | -11 |
| 46 | -527 |
| 47 | 44 |
| 48 | -566 |
| 49 | 107 |
| 50 | -599 |
| 51 | 177 |
| 52 | -626 |
| 53 | 255 |
| 54 | -645 |
| 55 | 339 |
| 56 | -656 |
| 57 | 429 |
| 58 | -658 |
| 59 | 524 |