n | a(n) |
---|---|
1 | 4 |
2 | 23 |
3 | 141 |
4 | 915 |
5 | 6375 |
6 | 46799 |
7 | 355805 |
8 | 2774348 |
9 | 22023132 |
10 | 177273427 |
11 | 1443074791 |
12 | 11855541525 |
13 | 98146301284 |
14 | 817786989282 |
[4,23,141,915,6375,46799,355805,2774348,22023132, 177273427,1443074791,11855541525,98146301284, 817786989282] |