n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 10 |
4 | 32 |
5 | 122 |
6 | 544 |
7 | 2874 |
8 | 17536 |
9 | 124274 |
10 | 997504 |
11 | 9112074 |
12 | 91956224 |
13 | 1034453162 |
14 | 12588279552 |
15 | 168010601274 |
16 | 2388796493824 |
17 | 36823967146978 |
18 | 598131709419520 |
19 | 10446218843141514 |
20 | 190679121272193024 |
[1,2,4,10,32,122,544,2874,17536,124274,997504, 9112074,91956224,1034453162,12588279552, 168010601274,2388796493824,36823967146978, 598131709419520,10446218843141514, 190679121272193024] |