n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 6 |
3 | 46 |
4 | 376 |
5 | 2841 |
6 | 19718 |
7 | 128535 |
8 | 805848 |
9 | 4942711 |
10 | 29970542 |
11 | 180700389 |
12 | 1086570460 |
13 | 6525662885 |
14 | 39170135870 |
15 | 235062159691 |
16 | 1410477973872 |
17 | 8463133736523 |
18 | 50779476069198 |
19 | 304678570340665 |
20 | 1828075815690100 |
21 | 10968466276145161 |
22 | 65810827526263678 |
[1,1,6,46,376,2841,19718,128535,805848,4942711, 29970542,180700389,1086570460,6525662885, 39170135870,235062159691,1410477973872, 8463133736523,50779476069198,304678570340665, 1828075815690100,10968466276145161, 65810827526263678] |