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 | 0 |
| 4 | 3 |
| 5 | -1 |
| 6 | 6 |
| 7 | 0 |
| 8 | 11 |
| 9 | 0 |
| 10 | 12 |
| 11 | -1 |
| 12 | 21 |
| 13 | 0 |
| 14 | 29 |
| 15 | -6 |
| 16 | 39 |
| 17 | -1 |
| 18 | 45 |
| 19 | 0 |
| 20 | 46 |
| 21 | 0 |
| 22 | 63 |
| 23 | -1 |
| 24 | 84 |
| 25 | -15 |
| 26 | 92 |
| 27 | 0 |
| 28 | 108 |
| 29 | -1 |
| 30 | 99 |
| 31 | 0 |
| 32 | 147 |
| 33 | -6 |
| 34 | 150 |
| 35 | -29 |
| 36 | 171 |
| 37 | 0 |
| 38 | 191 |
| 39 | 0 |
| 40 | 192 |
| 41 | -1 |
| 42 | 237 |
| 43 | 0 |
| 44 | 244 |
| 45 | -45 |
| 46 | 273 |
| 47 | -1 |
| 48 | 321 |
| 49 | 0 |
| 50 | 271 |
| 51 | -6 |
| 52 | 354 |
| 53 | -1 |
| 54 | 378 |
| 55 | -81 |
| 56 | 445 |
| 57 | 0 |
| 58 | 432 |
| 59 | -1 |
| 60 | 393 |
| 61 | 0 |
| 62 | 497 |
| 63 | 0 |
| 64 | 567 |
| 65 | -92 |
| 66 | 540 |
| 67 | 0 |
| 68 | 586 |
| 69 | -6 |
| 70 | 537 |
| 71 | -1 |
| 72 | 711 |
| 73 | 0 |
| 74 | 704 |
| 75 | -120 |
| 76 | 744 |