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 | -3 |
| 5 | 1 |
| 6 | -1 |
| 7 | 10 |
| 8 | -7 |
| 9 | 1 |
| 10 | 1 |
| 11 | -46 |
| 12 | 47 |
| 13 | -13 |
| 14 | 1 |
| 15 | -1 |
| 16 | 299 |
| 17 | -373 |
| 18 | 144 |
| 19 | -21 |
| 20 | 1 |
| 21 | 1 |
| 22 | -2577 |
| 23 | 3606 |
| 24 | -1696 |
| 25 | 345 |
| 26 | -31 |
| 27 | 1 |
| 28 | -1 |
| 29 | 27636 |
| 30 | -41746 |
| 31 | 22374 |
| 32 | -5605 |
| 33 | 706 |
| 34 | -43 |
| 35 | 1 |
| 36 | 1 |
| 37 | -353404 |
| 38 | 565202 |
| 39 | -332934 |
| 40 | 96359 |
| 41 | -15086 |
| 42 | 1295 |
| 43 | -57 |
| 44 | 1 |
| 45 | -1 |
| 46 | 5239925 |
| 47 | -8770446 |
| 48 | 5556536 |
| 49 | -1790603 |
| 50 | 327145 |
| 51 | -35161 |
| 52 | 2192 |
| 53 | -73 |
| 54 | 1 |
| 55 | 1 |
| 56 | -88310783 |
| 57 | 153499519 |
| 58 | -103128216 |
| 59 | 36149287 |
| 60 | -7422751 |
| 61 | 938028 |
| 62 | -73648 |
| 63 | 3489 |
| 64 | -91 |
| 65 | 1 |