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 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | 0 |
| 16 | 0 |
| 17 | 0 |
| 18 | 1 |
| 19 | 1 |
| 20 | 7 |
| 21 | 100 |
| 22 | 10901 |
| 23 | 3470736 |
| 24 | 1473822243 |
| 25 | 734843169811 |
| 26 | 423929978716908 |
| 27 | 281768931380519766 |
| 28 | 215039290728074333738 |
| 29 | 187766225244288486398132 |
| 30 | 186874272297562916477691894 |
| 31 | 211165081721567703008217979077 |