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 | 4 |
| 3 | -5 |
| 4 | 23 |
| 5 | -2 |
| 6 | -29 |
| 7 | -78 |
| 8 | 146 |
| 9 | 146 |
| 10 | 71 |
| 11 | -50 |
| 12 | -302 |
| 13 | -471 |
| 14 | -618 |
| 15 | -393 |
| 16 | 1399 |
| 17 | 1110 |
| 18 | 1110 |
| 19 | 749 |
| 20 | 49 |
| 21 | 490 |
| 22 | 127 |
| 23 | -402 |
| 24 | -2418 |
| 25 | -2418 |
| 26 | -2925 |
| 27 | -2925 |
| 28 | -4297 |
| 29 | -5138 |
| 30 | -4463 |
| 31 | -5424 |
| 32 | 8912 |
| 33 | 10001 |
| 34 | 9134 |
| 35 | 10359 |
| 36 | 10359 |
| 37 | 8990 |
| 38 | 7907 |
| 39 | 9428 |
| 40 | 3828 |
| 41 | 2147 |
| 42 | 3470 |
| 43 | 1621 |
| 44 | -1767 |
| 45 | -1767 |
| 46 | -3354 |
| 47 | -5563 |