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 | 2 |
| 2 | 1 |
| 3 | -14 |
| 4 | -3 |
| 5 | 8 |
| 6 | 4 |
| 7 | 278 |
| 8 | 3 |
| 9 | -272 |
| 10 | -92 |
| 11 | 88 |
| 12 | 44 |
| 13 | -15016 |
| 14 | 2188 |
| 15 | 19392 |
| 16 | 3932 |
| 17 | -11528 |
| 18 | -4488 |
| 19 | 2552 |
| 20 | 1276 |
| 21 | 2172632 |
| 22 | -589732 |
| 23 | -3352096 |
| 24 | -288860 |
| 25 | 2774376 |
| 26 | 809160 |
| 27 | -1156056 |
| 28 | -481052 |
| 29 | 193952 |
| 30 | 96976 |
| 31 | -835765304 |
| 32 | 313775572 |
| 33 | 1463316448 |
| 34 | -23403160 |
| 35 | -1510122768 |
| 36 | -308310816 |
| 37 | 893501136 |
| 38 | 303807944 |
| 39 | -285885248 |
| 40 | -123644400 |
| 41 | 38596448 |
| 42 | 19298224 |