n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 4 |
5 | 10 |
6 | 23 |
7 | 60 |
8 | 153 |
9 | 405 |
10 | 1076 |
11 | 2909 |
12 | 7907 |
13 | 21693 |
14 | 59834 |
15 | 166004 |
16 | 462612 |
17 | 1294612 |
18 | 3635809 |
19 | 10244017 |
[1,1,2,4,10,23,60,153,405,1076,2909,7907,21693, 59834,166004,462612,1294612,3635809,10244017] |