n | a(n) |
---|---|
0 | 1 |
1 | 7 |
2 | 50 |
3 | 362 |
4 | 2644 |
5 | 19420 |
6 | 143144 |
7 | 1057448 |
8 | 7822480 |
9 | 57916528 |
10 | 429034016 |
11 | 3179246240 |
12 | 23563798336 |
13 | 174671207872 |
14 | 1294885351040 |
15 | 9599803144832 |
16 | 71171535802624 |
17 | 527665122707200 |
18 | 3912149255197184 |
19 | 29005176890321408 |
[1,7,50,362,2644,19420,143144,1057448,7822480, 57916528,429034016,3179246240,23563798336, 174671207872,1294885351040,9599803144832, 71171535802624,527665122707200,3912149255197184, 29005176890321408] |