n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 3 |
6 | 11 |
7 | 31 |
8 | 71 |
9 | 157 |
10 | 397 |
11 | 1141 |
12 | 3301 |
13 | 9087 |
14 | 24311 |
15 | 66067 |
16 | 185771 |
17 | 532121 |
18 | 1520889 |
19 | 4316233 |
20 | 12255913 |
21 | 35079739 |
22 | 101232419 |
23 | 293236615 |
24 | 849895311 |
25 | 2465119669 |
26 | 7167636741 |
27 | 20909386941 |
28 | 61162159501 |
29 | 179214613111 |
30 | 525803297743 |
31 | 1544899158331 |
[1,1,1,1,3,11,31,71,157,397,1141,3301,9087,24311, 66067,185771,532121,1520889,4316233,12255913, 35079739,101232419,293236615,849895311,2465119669, 7167636741,20909386941,61162159501,179214613111, 525803297743,1544899158331] |