n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 18 |
3 | 130 |
4 | 1041 |
5 | 8889 |
6 | 79310 |
7 | 730593 |
8 | 6895575 |
9 | 66337179 |
10 | 648087750 |
11 | 6412437474 |
12 | 64125877361 |
13 | 647102364990 |
14 | 6581050832082 |
15 | 67384499298690 |
16 | 694077333315363 |
17 | 7186898222178342 |
18 | 74767377019254450 |
19 | 781105293655408554 |
20 | 8191332027277068543 |
[1,3,18,130,1041,8889,79310,730593,6895575, 66337179,648087750,6412437474,64125877361, 647102364990,6581050832082,67384499298690, 694077333315363,7186898222178342, 74767377019254450,781105293655408554, 8191332027277068543] |