n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 10 |
4 | 30 |
5 | 90 |
6 | 266 |
7 | 784 |
8 | 2304 |
9 | 6765 |
10 | 19855 |
11 | 58278 |
12 | 171106 |
13 | 502593 |
14 | 1477035 |
15 | 4343160 |
16 | 12778152 |
17 | 37616427 |
18 | 110797569 |
19 | 326527350 |
20 | 962803170 |
21 | 2840372304 |
22 | 8383467708 |
23 | 24755608584 |
24 | 73133433800 |
25 | 216143407675 |
26 | 639062383401 |
[1,3,10,30,90,266,784,2304,6765,19855,58278, 171106,502593,1477035,4343160,12778152,37616427, 110797569,326527350,962803170,2840372304, 8383467708,24755608584,73133433800,216143407675, 639062383401] |