n | a(n) |
---|---|
0 | 3 |
1 | 20 |
2 | 142 |
3 | 1070 |
4 | 8482 |
5 | 69950 |
6 | 593722 |
7 | 5141030 |
8 | 45116962 |
9 | 399451310 |
10 | 3557016202 |
11 | 31792684790 |
12 | 284850459442 |
13 | 2556147225470 |
14 | 22961260134682 |
15 | 206391834657350 |
16 | 1855993886649922 |
17 | 16694871298564430 |
18 | 150200009950933162 |
[3,20,142,1070,8482,69950,593722,5141030,45116962, 399451310,3557016202,31792684790,284850459442, 2556147225470,22961260134682,206391834657350, 1855993886649922,16694871298564430, 150200009950933162] |