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 | 108 |
| 2 | 480 |
| 3 | 1667 |
| 4 | 4930 |
| 5 | 13052 |
| 6 | 31936 |
| 7 | 73805 |
| 8 | 163604 |
| 9 | 351804 |
| 10 | 740008 |
| 11 | 1532159 |
| 12 | 3136950 |
| 13 | 6372636 |
| 14 | 12876648 |
| 15 | 25924809 |
| 16 | 52069752 |
| 17 | 104417740 |
| 18 | 209182288 |
| 19 | 418791387 |
| 20 | 838101930 |
| 21 | 1676828540 |
| 22 | 3354401200 |
| 23 | 6709680485 |
| 24 | 13420387996 |