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 | 41 |
| 2 | 661 |
| 3 | 5741 |
| 4 | 33001 |
| 5 | 142001 |
| 6 | 494341 |
| 7 | 1465661 |
| 8 | 3833941 |
| 9 | 9073501 |
| 10 | 19789001 |
| 11 | 40328641 |
| 12 | 77620661 |
| 13 | 142282141 |
| 14 | 250054001 |
| 15 | 423621001 |
| 16 | 694880441 |
| 17 | 1107728161 |
| 18 | 1721435341 |
| 19 | 2614694501 |
| 20 | 3890418001 |
| 21 | 5681377241 |
| 22 | 8156775661 |
| 23 | 11529853541 |