n | a(n) |
---|---|
0 | 0 |
1 | 6 |
2 | 54 |
3 | 324 |
4 | 1620 |
5 | 7290 |
6 | 30618 |
7 | 122472 |
8 | 472392 |
9 | 1771470 |
10 | 6495390 |
11 | 23383404 |
12 | 82904796 |
13 | 290166786 |
14 | 1004423490 |
15 | 3443737680 |
16 | 11708708112 |
17 | 39516889878 |
18 | 132497807238 |
19 | 441659357460 |
20 | 1464449448420 |
21 | 4832683179786 |
22 | 15878816162154 |
[0,6,54,324,1620,7290,30618,122472,472392,1771470, 6495390,23383404,82904796,290166786,1004423490, 3443737680,11708708112,39516889878,132497807238, 441659357460,1464449448420,4832683179786, 15878816162154] |