n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 10 |
3 | 66 |
4 | 426 |
5 | 2964 |
6 | 22818 |
7 | 195000 |
8 | 1842234 |
9 | 19120260 |
10 | 216604194 |
11 | 2662063728 |
12 | 35297775930 |
13 | 502460232684 |
14 | 7644691295970 |
15 | 123824090015544 |
16 | 2127644969464698 |
17 | 38659776477571860 |
18 | 740692592536389474 |
19 | 14924674961053224000 |
20 | 315523813278300959994 |
[0,1,10,66,426,2964,22818,195000,1842234,19120260, 216604194,2662063728,35297775930,502460232684, 7644691295970,123824090015544,2127644969464698, 38659776477571860,740692592536389474, 14924674961053224000,315523813278300959994] |