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 | 4 |
| 2 | 6 |
| 3 | 12 |
| 4 | 244 |
| 5 | 276 |
| 6 | 2806 |
| 7 | 5028 |
| 8 | 10308 |
| 9 | 40132 |
| 10 | 51118 |
| 11 | 115644 |
| 12 | 185646 |
| 13 | 216492 |
| 14 | 237084 |
| 15 | 789636 |
| 16 | 936046 |
| 17 | 941818 |
| 18 | 1062876 |
| 19 | 1237276 |
| 20 | 1469716 |
| 21 | 2119002 |
| 22 | 2201002 |
| 23 | 2410354 |
| 24 | 2446426 |
| 25 | 3198196 |
| 26 | 4319052 |
| 27 | 4979316 |
| 28 | 5329468 |
| 29 | 5496492 |
| 30 | 7171876 |
| 31 | 9513076 |