n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 8 |
5 | 36 |
6 | 176 |
7 | 918 |
8 | 4936 |
9 | 26958 |
10 | 150026 |
11 | 846177 |
12 | 4829398 |
13 | 27836499 |
14 | 161828375 |
15 | 947782262 |
16 | 5587055678 |
17 | 33124063134 |
18 | 197385032889 |
19 | 1181572853600 |
20 | 7102047195736 |
21 | 42846230488269 |
22 | 259358408077863 |
23 | 1574775193889333 |
24 | 9588601977357132 |
25 | 58534511044031645 |
[0,1,1,1,8,36,176,918,4936,26958,150026,846177, 4829398,27836499,161828375,947782262,5587055678, 33124063134,197385032889,1181572853600, 7102047195736,42846230488269,259358408077863, 1574775193889333,9588601977357132, 58534511044031645] |