n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 7 |
3 | 31 |
4 | 145 |
5 | 659 |
6 | 3013 |
7 | 13739 |
8 | 62685 |
9 | 285931 |
10 | 1304317 |
11 | 5949691 |
12 | 27139885 |
13 | 123799979 |
14 | 564720253 |
15 | 2576001179 |
16 | 11750565645 |
17 | 53600825611 |
18 | 244502997277 |
19 | 1115313334651 |
20 | 5087560679725 |
21 | 23207176728299 |
22 | 105860762284093 |
23 | 482889457961819 |
24 | 2202725765245005 |
[0,1,7,31,145,659,3013,13739,62685,285931,1304317, 5949691,27139885,123799979,564720253,2576001179, 11750565645,53600825611,244502997277, 1115313334651,5087560679725,23207176728299, 105860762284093,482889457961819,2202725765245005] |