n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 2 |
3 | 10 |
4 | 32 |
5 | 124 |
6 | 440 |
7 | 1624 |
8 | 5888 |
9 | 21520 |
10 | 78368 |
11 | 285856 |
12 | 1041920 |
13 | 3798976 |
14 | 13849472 |
15 | 50492800 |
16 | 184082432 |
17 | 671121664 |
18 | 2446737920 |
19 | 8920205824 |
20 | 32520839168 |
21 | 118562913280 |
22 | 432250861568 |
23 | 1575879202816 |
24 | 5745263575040 |
[0,1,2,10,32,124,440,1624,5888,21520,78368,285856, 1041920,3798976,13849472,50492800,184082432, 671121664,2446737920,8920205824,32520839168, 118562913280,432250861568,1575879202816, 5745263575040] |