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 | 16 |
| 1 | 17 |
| 2 | 33 |
| 3 | 51 |
| 4 | 81 |
| 5 | 122 |
| 6 | 180 |
| 7 | -6 |
| 8 | -30 |
| 9 | -162 |
| 10 | -849 |
| 11 | -3683 |
| 12 | -14889 |
| 13 | -67387 |
| 14 | -270481 |
| 15 | -1083495 |
| 16 | -5351733 |
| 17 | -23785493 |
| 18 | -95779647 |
| 19 | -425687333 |
| 20 | -1702749333 |
| 21 | -7385743647 |
| 22 | -33685755741 |
| 23 | -156526119063 |
| 24 | -703401325293 |
| 25 | -3048080581927 |
| 26 | -12307998348021 |
| 27 | -53348118829343 |