n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 8 |
6 | 24 |
7 | 282 |
8 | 888 |
9 | 46933 |
10 | 238119 |
11 | 36027060 |
12 | 187011538 |
13 | 130162111969 |
14 | 1084873972934 |
15 | 2200211600730504 |
16 | 18559765767843341 |
17 | 174907641314142138422 |
18 | 2355130982684196593401 |
19 | 65250573687646264926302133 |
20 | 884112393542714503429381555 |
21 | 114482128183138374886637093070429 |
[1,1,1,2,8,24,282,888,46933,238119,36027060, 187011538,130162111969,1084873972934, 2200211600730504,18559765767843341, 174907641314142138422,2355130982684196593401, 65250573687646264926302133, 884112393542714503429381555, 114482128183138374886637093070429] |