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 | 8 |
| 3 | 23 |
| 4 | 17 |
| 5 | -4 |
| 6 | 3 |
| 7 | -4 |
| 8 | 5 |
| 9 | -10 |
| 10 | 16 |
| 11 | -34 |
| 12 | 69 |
| 13 | -150 |
| 14 | 336 |
| 15 | -777 |
| 16 | 1833 |
| 17 | -4422 |
| 18 | 10852 |
| 19 | -27053 |
| 20 | 68354 |
| 21 | -174820 |
| 22 | 451966 |
| 23 | -1179915 |
| 24 | 3107551 |
| 25 | -8250149 |
| 26 | 22063698 |
| 27 | -59402336 |
| 28 | 160918012 |
| 29 | -438405420 |
| 30 | 1200699624 |
| 31 | -3304583628 |
| 32 | 9136432371 |
| 33 | -25367772162 |
| 34 | 70715532758 |
| 35 | -197863773109 |
| 36 | 555569907134 |