n | a(n) |
---|---|
4 | 1 |
5 | 21 |
6 | 166 |
7 | 1247 |
8 | 7855 |
9 | 47245 |
10 | 284968 |
11 | 1741235 |
12 | 10782872 |
13 | 69537976 |
14 | 471717130 |
15 | 3336898255 |
16 | 24584784957 |
17 | 189704257763 |
18 | 1530649634720 |
19 | 12849873769593 |
20 | 111945035887787 |
21 | 1011184665775833 |
22 | 9458811859041042 |
23 | 91480934118104305 |
24 | 913112230809837136 |
25 | 9391472034599656856 |
[1,21,166,1247,7855,47245,284968,1741235,10782872, 69537976,471717130,3336898255,24584784957, 189704257763,1530649634720,12849873769593, 111945035887787,1011184665775833,9458811859041042, 91480934118104305,913112230809837136, 9391472034599656856] |