n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 56 |
3 | 486 |
4 | 4016 |
5 | 32526 |
6 | 261416 |
7 | 2094966 |
8 | 16770656 |
9 | 134198046 |
10 | 1073682776 |
11 | 8589757446 |
12 | 68718945296 |
13 | 549754219566 |
14 | 4398041728136 |
15 | 35184357739926 |
16 | 281474933663936 |
17 | 2251799684545086 |
18 | 18014398122061496 |
19 | 144115186913594406 |
[1,6,56,486,4016,32526,261416,2094966,16770656, 134198046,1073682776,8589757446,68718945296, 549754219566,4398041728136,35184357739926, 281474933663936,2251799684545086, 18014398122061496,144115186913594406] |