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 | -1 |
| 3 | -8 |
| 4 | -19 |
| 5 | -34 |
| 6 | -53 |
| 7 | -76 |
| 8 | -103 |
| 9 | -134 |
| 10 | -169 |
| 11 | -208 |
| 12 | -251 |
| 13 | -298 |
| 14 | -349 |
| 15 | -404 |
| 16 | -463 |
| 17 | -526 |
| 18 | -593 |
| 19 | -664 |
| 20 | -739 |
| 21 | -818 |
| 22 | -901 |
| 23 | -988 |
| 24 | -1079 |
| 25 | -1174 |
| 26 | -1273 |
| 27 | -1376 |
| 28 | -1483 |
| 29 | -1594 |
| 30 | -1709 |
| 31 | -1828 |
| 32 | -1951 |
| 33 | -2078 |
| 34 | -2209 |
| 35 | -2344 |
| 36 | -2483 |
| 37 | -2626 |
| 38 | -2773 |
| 39 | -2924 |
| 40 | -3079 |
| 41 | -3238 |
| 42 | -3401 |
| 43 | -3568 |
| 44 | -3739 |
| 45 | -3914 |
| 46 | -4093 |
| 47 | -4276 |
| 48 | -4463 |
| 49 | -4654 |
| 50 | -4849 |