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 | 5 |
| 2 | 1 |
| 3 | 1 |
| 4 | -1 |
| 5 | -11 |
| 6 | -5 |
| 7 | -31 |
| 8 | -11 |
| 9 | -59 |
| 10 | -19 |
| 11 | -95 |
| 12 | -29 |
| 13 | -139 |
| 14 | -41 |
| 15 | -191 |
| 16 | -55 |
| 17 | -251 |
| 18 | -71 |
| 19 | -319 |
| 20 | -89 |
| 21 | -395 |
| 22 | -109 |
| 23 | -479 |
| 24 | -131 |
| 25 | -571 |
| 26 | -155 |
| 27 | -671 |
| 28 | -181 |
| 29 | -779 |
| 30 | -209 |
| 31 | -895 |
| 32 | -239 |
| 33 | -1019 |
| 34 | -271 |
| 35 | -1151 |
| 36 | -305 |
| 37 | -1291 |
| 38 | -341 |
| 39 | -1439 |
| 40 | -379 |
| 41 | -1595 |
| 42 | -419 |
| 43 | -1759 |
| 44 | -461 |
| 45 | -1931 |
| 46 | -505 |