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 | 1 |
| 2 | 2 |
| 3 | 1 |
| 4 | 7 |
| 5 | -4 |
| 6 | 1 |
| 7 | 24 |
| 8 | -23 |
| 9 | -8 |
| 10 | 1 |
| 11 | 76 |
| 12 | -164 |
| 13 | -79 |
| 14 | 16 |
| 15 | 1 |
| 16 | 235 |
| 17 | -960 |
| 18 | -1045 |
| 19 | 255 |
| 20 | 32 |
| 21 | 1 |
| 22 | 716 |
| 23 | -5485 |
| 24 | -11155 |
| 25 | 5940 |
| 26 | 831 |
| 27 | -64 |
| 28 | 1 |
| 29 | 2166 |
| 30 | -29816 |
| 31 | -116480 |
| 32 | 109960 |
| 33 | 32778 |
| 34 | -2687 |
| 35 | -128 |
| 36 | 1 |
| 37 | 6527 |
| 38 | -158252 |
| 39 | -1143336 |
| 40 | 2024920 |
| 41 | 1029844 |
| 42 | -176257 |
| 43 | -8703 |
| 44 | 256 |
| 45 | 1 |
| 46 | 19628 |
| 47 | -822291 |
| 48 | -10851888 |
| 49 | 34850816 |
| 50 | 32711632 |
| 51 | -9230829 |
| 52 | -937812 |
| 53 | 28159 |
| 54 | 512 |