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 | 9 |
| 2 | 8 |
| 3 | 14 |
| 4 | 18 |
| 5 | 25 |
| 6 | 32 |
| 7 | 39 |
| 8 | 42 |
| 9 | 34 |
| 10 | 0 |
| 11 | -89 |
| 12 | -288 |
| 13 | -699 |
| 14 | -1508 |
| 15 | -3050 |
| 16 | -5922 |
| 17 | -11179 |
| 18 | -20672 |
| 19 | -37629 |
| 20 | -67650 |
| 21 | -120406 |
| 22 | -212532 |
| 23 | -372541 |
| 24 | -649152 |
| 25 | -1125375 |
| 26 | -1942288 |
| 27 | -3339106 |
| 28 | -5720598 |
| 29 | -9770351 |
| 30 | -16640800 |
| 31 | -28271649 |