n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 9 |
4 | 25 |
5 | 71 |
6 | 195 |
7 | 543 |
8 | 1479 |
9 | 4067 |
10 | 11025 |
11 | 30073 |
12 | 81233 |
13 | 220375 |
14 | 593611 |
15 | 1604149 |
16 | 4311333 |
17 | 11616669 |
18 | 31164683 |
19 | 83779155 |
20 | 224424291 |
21 | 602201507 |
22 | 1611140121 |
23 | 4316653453 |
24 | 11536599329 |
25 | 30870338727 |
26 | 82428196555 |
27 | 220329372907 |
[1,3,9,25,71,195,543,1479,4067,11025,30073,81233, 220375,593611,1604149,4311333,11616669,31164683, 83779155,224424291,602201507,1611140121, 4316653453,11536599329,30870338727,82428196555, 220329372907] |