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 | 644 |
| 2 | 796 |
| 3 | 1560 |
| 4 | 2590 |
| 5 | 3828 |
| 6 | 8646 |
| 7 | 16000 |
| 8 | 24508 |
| 9 | 49816 |
| 10 | 103124 |
| 11 | 168848 |
| 12 | 309802 |
| 13 | 649200 |
| 14 | 1162556 |
| 15 | 2036072 |
| 16 | 4109542 |
| 17 | 7787612 |
| 18 | 13696344 |
| 19 | 26404180 |
| 20 | 51320598 |
| 21 | 92306500 |
| 22 | 172258250 |
| 23 | 335370864 |
| 24 | 618838306 |
| 25 | 1136886200 |
| 26 | 2187906876 |
| 27 | 4116117684 |