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 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 3 |
| 9 | 1 |
| 10 | 1 |
| 11 | 4 |
| 12 | -2 |
| 13 | 4 |
| 14 | 1 |
| 15 | 1 |
| 16 | -13 |
| 17 | 26 |
| 18 | -10 |
| 19 | 5 |
| 20 | 1 |
| 21 | 1 |
| 22 | 142 |
| 23 | -229 |
| 24 | 116 |
| 25 | -25 |
| 26 | 6 |
| 27 | 1 |
| 28 | 1 |
| 29 | -1931 |
| 30 | 3181 |
| 31 | -1567 |
| 32 | 371 |
| 33 | -49 |
| 34 | 7 |
| 35 | 1 |
| 36 | 1 |
| 37 | 36296 |
| 38 | -59700 |
| 39 | 29464 |
| 40 | -6922 |
| 41 | 952 |
| 42 | -84 |
| 43 | 8 |
| 44 | 1 |
| 45 | 1 |
| 46 | -893273 |
| 47 | 1469380 |
| 48 | -725108 |
| 49 | 170398 |
| 50 | -23358 |
| 51 | 2100 |
| 52 | -132 |
| 53 | 9 |
| 54 | 1 |
| 55 | 1 |
| 56 | 27927346 |
| 57 | -45938639 |
| 58 | 22669816 |
| 59 | -5327198 |
| 60 | 730252 |
| 61 | -65526 |
| 62 | 4152 |