n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 24 |
3 | 96 |
4 | 372 |
5 | 1416 |
6 | 5340 |
7 | 20040 |
8 | 75012 |
9 | 280392 |
10 | 1047324 |
11 | 3910440 |
12 | 14597508 |
13 | 54485736 |
14 | 203357724 |
15 | 758969736 |
16 | 2832570372 |
17 | 10571410056 |
18 | 39453266460 |
19 | 147242049000 |
20 | 549515715972 |
21 | 2050822387752 |
22 | 7653776980764 |
23 | 28564291826760 |
24 | 106603402909188 |
25 | 397849344975816 |
26 | 1484794027325724 |
27 | 5541326864990376 |
[1,6,24,96,372,1416,5340,20040,75012,280392, 1047324,3910440,14597508,54485736,203357724, 758969736,2832570372,10571410056,39453266460, 147242049000,549515715972,2050822387752, 7653776980764,28564291826760,106603402909188, 397849344975816,1484794027325724,5541326864990376] |