n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 11 |
4 | 40 |
5 | 165 |
6 | 930 |
7 | 6109 |
8 | 47364 |
9 | 416259 |
10 | 4092332 |
11 | 44424105 |
12 | 527512456 |
13 | 6798907261 |
14 | 94504292830 |
15 | 1408973416983 |
16 | 22426222792568 |
17 | 379522092608193 |
18 | 6804315178122972 |
19 | 128828842646944153 |
20 | 2568533750232696472 |
21 | 53788282243854348683 |
22 | 1180357162840669081094 |
[1,1,4,11,40,165,930,6109,47364,416259,4092332, 44424105,527512456,6798907261,94504292830, 1408973416983,22426222792568,379522092608193, 6804315178122972,128828842646944153, 2568533750232696472,53788282243854348683, 1180357162840669081094] |