n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 9 |
5 | 33 |
6 | 125 |
7 | 503 |
8 | 2081 |
9 | 8849 |
10 | 38345 |
11 | 168875 |
12 | 753401 |
13 | 3398177 |
14 | 15469493 |
15 | 70984559 |
16 | 327982529 |
17 | 1524644897 |
18 | 7125440913 |
19 | 33459931155 |
20 | 157794990633 |
21 | 747021246817 |
22 | 3548843286829 |
23 | 16912921740775 |
24 | 80836929471329 |
25 | 387397148131889 |
26 | 1861088017162457 |
[1,1,3,9,33,125,503,2081,8849,38345,168875,753401, 3398177,15469493,70984559,327982529,1524644897, 7125440913,33459931155,157794990633,747021246817, 3548843286829,16912921740775,80836929471329, 387397148131889,1861088017162457] |