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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 4 |
| 6 | 5 |
| 7 | 5 |
| 8 | 7 |
| 9 | 6 |
| 10 | 6 |
| 11 | 7 |
| 12 | 9 |
| 13 | 2 |
| 14 | 7 |
| 15 | 5 |
| 16 | 3 |
| 17 | 5 |
| 18 | 2 |
| 19 | -7 |
| 20 | 1 |
| 21 | -9 |
| 22 | -8 |
| 23 | -4 |
| 24 | 4 |
| 25 | -25 |
| 26 | -25 |
| 27 | -26 |
| 28 | -40 |
| 29 | -31 |
| 30 | -19 |
| 31 | -31 |
| 32 | -17 |
| 33 | -53 |
| 34 | -65 |
| 35 | -57 |
| 36 | -71 |
| 37 | -92 |
| 38 | -71 |
| 39 | -79 |
| 40 | -91 |
| 41 | -95 |
| 42 | -85 |
| 43 | -138 |
| 44 | -88 |
| 45 | -100 |
| 46 | -115 |
| 47 | -109 |
| 48 | -125 |
| 49 | -195 |
| 50 | -215 |
| 51 | -207 |
| 52 | -191 |
| 53 | -210 |
| 54 | -213 |
| 55 | -227 |
| 56 | -199 |
| 57 | -193 |
| 58 | -233 |
| 59 | -222 |
| 60 | -238 |