n | a(n) |
---|---|
1 | 7 |
2 | 35 |
3 | 181 |
4 | 953 |
5 | 4997 |
6 | 26155 |
7 | 137033 |
8 | 717905 |
9 | 3760657 |
10 | 19700359 |
11 | 103201589 |
12 | 540625665 |
13 | 2832090849 |
14 | 14836035579 |
15 | 77719229889 |
16 | 407135626281 |
17 | 2132798039801 |
18 | 11172757117047 |
19 | 58528983567693 |
20 | 306606675825193 |
21 | 1606172667510097 |
[7,35,181,953,4997,26155,137033,717905,3760657, 19700359,103201589,540625665,2832090849, 14836035579,77719229889,407135626281, 2132798039801,11172757117047,58528983567693, 306606675825193,1606172667510097] |