n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 29 |
3 | 229 |
4 | 1847 |
5 | 14974 |
6 | 121430 |
7 | 983476 |
8 | 7952111 |
9 | 64193728 |
10 | 517447289 |
11 | 4165721377 |
12 | 33500374796 |
13 | 269166095800 |
14 | 2161064409680 |
15 | 17339917293304 |
16 | 139060729285871 |
17 | 1114752741216196 |
18 | 8933074352513183 |
19 | 71564554425680839 |
[1,4,29,229,1847,14974,121430,983476,7952111, 64193728,517447289,4165721377,33500374796, 269166095800,2161064409680,17339917293304, 139060729285871,1114752741216196,8933074352513183, 71564554425680839] |