n | a(n) |
---|---|
0 | 1 |
1 | 18 |
2 | 211 |
3 | 2052 |
4 | 18025 |
5 | 148806 |
6 | 1179487 |
7 | 9089784 |
8 | 68647909 |
9 | 510709914 |
10 | 3756191803 |
11 | 27381204396 |
12 | 198197187553 |
13 | 1426557620142 |
14 | 10220981500759 |
15 | 72957382445088 |
16 | 519164877763357 |
17 | 3684933735388290 |
18 | 26099214855723955 |
[1,18,211,2052,18025,148806,1179487,9089784, 68647909,510709914,3756191803,27381204396, 198197187553,1426557620142,10220981500759, 72957382445088,519164877763357,3684933735388290, 26099214855723955] |