n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | 3 |
4 | 12 |
5 | 70 |
6 | 465 |
7 | 3591 |
8 | 31948 |
9 | 319068 |
10 | 3539385 |
11 | 43205635 |
12 | 575312826 |
13 | 8298867798 |
14 | 128921967265 |
15 | 2145837600375 |
16 | 38097353658120 |
17 | 718657756980376 |
18 | 14354000800751313 |
19 | 302625047150614179 |
20 | 6716038666999745710 |
21 | 156498725047355717250 |
22 | 3820426102008414736761 |
[1,0,1,3,12,70,465,3591,31948,319068,3539385, 43205635,575312826,8298867798,128921967265, 2145837600375,38097353658120,718657756980376, 14354000800751313,302625047150614179, 6716038666999745710,156498725047355717250, 3820426102008414736761] |