n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 42 |
3 | 294 |
4 | 2058 |
5 | 14406 |
6 | 100842 |
7 | 705894 |
8 | 4941258 |
9 | 34588806 |
10 | 242121642 |
11 | 1694851494 |
12 | 11863960458 |
13 | 83047723206 |
14 | 581334062442 |
15 | 4069338437094 |
16 | 28485369059658 |
17 | 199397583417606 |
18 | 1395783083923242 |
19 | 9770481587462694 |
[1,6,42,294,2058,14406,100842,705894,4941258, 34588806,242121642,1694851494,11863960458, 83047723206,581334062442,4069338437094, 28485369059658,199397583417606,1395783083923242, 9770481587462694] |