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 | 2 |
| 2 | 5 |
| 3 | 2 |
| 4 | -6 |
| 5 | -5 |
| 6 | 9 |
| 7 | 13 |
| 8 | -10 |
| 9 | -27 |
| 10 | 6 |
| 11 | 50 |
| 12 | 11 |
| 13 | -83 |
| 14 | -55 |
| 15 | 122 |
| 16 | 149 |
| 17 | -150 |
| 18 | -326 |
| 19 | 123 |
| 20 | 625 |
| 21 | 53 |
| 22 | -1074 |
| 23 | -555 |
| 24 | 1646 |
| 25 | 1682 |
| 26 | -2165 |
| 27 | -3883 |
| 28 | 2129 |
| 29 | 7730 |
| 30 | -411 |
| 31 | -13742 |
| 32 | -5190 |
| 33 | 21883 |
| 34 | 18521 |
| 35 | -30435 |
| 36 | -45594 |
| 37 | 33797 |
| 38 | 94550 |
| 39 | -18638 |
| 40 | -173941 |
| 41 | -42115 |
| 42 | 287129 |
| 43 | 197418 |
| 44 | -418955 |
| 45 | -526662 |
| 46 | 508666 |
| 47 | 1143035 |
| 48 | -400959 |