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 | 0 |
| 3 | -3 |
| 4 | -20 |
| 5 | -115 |
| 6 | -714 |
| 7 | -5033 |
| 8 | -40312 |
| 9 | -362871 |
| 10 | 8 |
| 11 | 9 |
| 12 | 9 |
| 13 | 6 |
| 14 | -11 |
| 15 | -106 |
| 16 | -705 |
| 17 | -5024 |
| 18 | -40303 |
| 19 | -362862 |
| 20 | 17 |
| 21 | 18 |
| 22 | 18 |
| 23 | 15 |
| 24 | -2 |
| 25 | -97 |
| 26 | -696 |
| 27 | -5015 |
| 28 | -40294 |
| 29 | -362853 |
| 30 | 23 |
| 31 | 24 |
| 32 | 24 |
| 33 | 21 |
| 34 | 4 |
| 35 | -91 |
| 36 | -690 |
| 37 | -5009 |
| 38 | -40288 |
| 39 | -362847 |
| 40 | 15 |
| 41 | 16 |
| 42 | 16 |
| 43 | 13 |
| 44 | -4 |
| 45 | -99 |
| 46 | -698 |
| 47 | -5017 |
| 48 | -40296 |
| 49 | -362855 |
| 50 | -71 |
| 51 | -70 |
| 52 | -70 |
| 53 | -73 |