n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 16 |
5 | 54 |
6 | 232 |
7 | 1132 |
8 | 7628 |
9 | 50462 |
10 | 382076 |
11 | 2944618 |
12 | 24671640 |
13 | 216525368 |
14 | 2053251888 |
15 | 23564654276 |
16 | 271943000896 |
[1,2,6,16,54,232,1132,7628,50462,382076,2944618, 24671640,216525368,2053251888,23564654276, 271943000896] |