n | a(n) |
---|---|
4 | 1 |
5 | 2 |
6 | 9 |
7 | 38 |
8 | 177 |
9 | 882 |
10 | 4711 |
11 | 26795 |
12 | 161583 |
13 | 1028992 |
14 | 6896067 |
15 | 48487476 |
16 | 356703531 |
17 | 2738868784 |
18 | 21901044795 |
19 | 182022288438 |
20 | 1569519971934 |
21 | 14017732109520 |
22 | 129480496353104 |
23 | 1235228480628932 |
24 | 12154988981496309 |
25 | 123229919746398894 |
26 | 1285758785855488107 |
[1,2,9,38,177,882,4711,26795,161583,1028992, 6896067,48487476,356703531,2738868784,21901044795, 182022288438,1569519971934,14017732109520, 129480496353104,1235228480628932, 12154988981496309,123229919746398894, 1285758785855488107] |