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) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 9 |
| 5 | 37 |
| 6 | 86 |
| 7 | 232 |
| 8 | 748 |
| 9 | 932 |
| 10 | 2865 |
| 11 | 17761 |
| 12 | 109780 |
| 13 | 249840 |
| 14 | 1190787 |
| 15 | 3869645 |
| 16 | 6479631 |
| 17 | 69445201 |
| 18 | 75334942 |