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) |
|---|---|
| 10 | 1 |
| 11 | 19 |
| 12 | 207 |
| 13 | 1702 |
| 14 | 11753 |
| 15 | 72036 |
| 16 | 404984 |
| 17 | 2133296 |
| 18 | 10683684 |
| 19 | 51401251 |
| 20 | 239414383 |
| 21 | 1085877703 |
| 22 | 4817505085 |
| 23 | 20980377935 |
| 24 | 89946293430 |
| 25 | 380474702119 |
| 26 | 1590937817465 |
| 27 | 6586217434917 |
| 28 | 27029162258043 |
| 29 | 110080667694767 |
| 30 | 445314691051823 |
| 31 | 1790757125809356 |
| 32 | 7163205912228257 |