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 | -11 |
| 2 | -21 |
| 3 | -55 |
| 4 | -110 |
| 5 | -285 |
| 6 | -450 |
| 7 | -1001 |
| 8 | -1605 |
| 9 | -2936 |
| 10 | -4740 |
| 11 | -8271 |
| 12 | -12571 |
| 13 | -21075 |
| 14 | -31755 |
| 15 | -50104 |
| 16 | -74600 |
| 17 | -114816 |
| 18 | -166570 |
| 19 | -250601 |
| 20 | -359499 |
| 21 | -526106 |
| 22 | -746512 |
| 23 | -1074840 |
| 24 | -1501836 |
| 25 | -2131049 |
| 26 | -2949216 |
| 27 | -4117846 |
| 28 | -5647010 |
| 29 | -7795266 |
| 30 | -10578308 |
| 31 | -14451212 |
| 32 | -19455813 |
| 33 | -26294800 |
| 34 | -35138260 |