n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 4 |
8 | 26 |
9 | 235 |
10 | 1585 |
11 | 10453 |
12 | 40151 |
13 | 199922 |
14 | 792867 |
15 | 3146993 |
16 | 12532362 |
17 | 49280874 |
18 | 189564720 |
19 | 739243108 |
20 | 2858545267 |
21 | 11101139486 |
22 | 43154849550 |
23 | 167993679964 |
24 | 654778791594 |
25 | 2556955750961 |
[0,0,0,0,0,0,4,26,235,1585,10453,40151,199922, 792867,3146993,12532362,49280874,189564720, 739243108,2858545267,11101139486,43154849550, 167993679964,654778791594,2556955750961] |