n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 4 |
6 | 8 |
7 | 14 |
8 | 32 |
9 | 70 |
10 | 140 |
11 | 324 |
12 | 768 |
13 | 1800 |
14 | 4368 |
15 | 10800 |
16 | 27300 |
17 | 70560 |
18 | 184800 |
19 | 494208 |
20 | 1343680 |
21 | 3704400 |
22 | 10388250 |
23 | 29560960 |
24 | 85250880 |
25 | 249318000 |
26 | 738720000 |
27 | 2216160000 |
28 | 6729074352 |
29 | 20675655000 |
30 | 64245312000 |
31 | 201819656500 |
32 | 640760440320 |
[1,1,1,1,2,4,8,14,32,70,140,324,768,1800,4368, 10800,27300,70560,184800,494208,1343680,3704400, 10388250,29560960,85250880,249318000,738720000, 2216160000,6729074352,20675655000,64245312000, 201819656500,640760440320] |