n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 19 |
3 | 71 |
4 | 265 |
5 | 989 |
6 | 3691 |
7 | 13775 |
8 | 51409 |
9 | 191861 |
10 | 716035 |
11 | 2672279 |
12 | 9973081 |
13 | 37220045 |
14 | 138907099 |
15 | 518408351 |
16 | 1934726305 |
17 | 7220496869 |
18 | 26947261171 |
19 | 100568547815 |
20 | 375326930089 |
21 | 1400739172541 |
22 | 5227629760075 |
23 | 19509779867759 |
24 | 72811489710961 |
25 | 271736178976085 |
[1,5,19,71,265,989,3691,13775,51409,191861,716035, 2672279,9973081,37220045,138907099,518408351, 1934726305,7220496869,26947261171,100568547815, 375326930089,1400739172541,5227629760075, 19509779867759,72811489710961,271736178976085] |