n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 21 |
5 | 82 |
6 | 354 |
7 | 1671 |
8 | 8536 |
9 | 46814 |
10 | 273907 |
11 | 1700828 |
12 | 11158746 |
13 | 77057021 |
14 | 558234902 |
15 | 4230337018 |
16 | 33448622893 |
17 | 275322101318 |
18 | 2354401779494 |
19 | 20878592918183 |
20 | 191682453823420 |
21 | 1819147694792802 |
22 | 17822073621801123 |
[1,1,2,6,21,82,354,1671,8536,46814,273907,1700828, 11158746,77057021,558234902,4230337018, 33448622893,275322101318,2354401779494, 20878592918183,191682453823420,1819147694792802, 17822073621801123] |