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 | 1 |
| 2 | -5 |
| 3 | -11 |
| 4 | 3 |
| 5 | -29 |
| 6 | 55 |
| 7 | -55 |
| 8 | 3 |
| 9 | 16 |
| 10 | 145 |
| 11 | -131 |
| 12 | -33 |
| 13 | -181 |
| 14 | 275 |
| 15 | 319 |
| 16 | 3 |
| 17 | -305 |
| 18 | -80 |
| 19 | -379 |
| 20 | -87 |
| 21 | 605 |
| 22 | 655 |
| 23 | -551 |
| 24 | -33 |
| 25 | 96 |
| 26 | 905 |
| 27 | 16 |
| 28 | -165 |
| 29 | -869 |
| 30 | -1595 |
| 31 | -991 |
| 32 | 3 |
| 33 | 1441 |
| 34 | 1525 |
| 35 | 1595 |
| 36 | 48 |
| 37 | -1405 |
| 38 | 1895 |
| 39 | 1991 |
| 40 | -87 |
| 41 | -1721 |
| 42 | -3025 |
| 43 | -1891 |
| 44 | -393 |
| 45 | -464 |
| 46 | 2755 |
| 47 | -2255 |
| 48 | -33 |
| 49 | 288 |
| 50 | -480 |
| 51 | 3355 |
| 52 | -543 |
| 53 | -2861 |
| 54 | -80 |
| 55 | 3799 |