n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 9 |
3 | 25 |
4 | 63 |
5 | 171 |
6 | 471 |
7 | 1193 |
8 | 3209 |
9 | 8841 |
10 | 22537 |
11 | 60393 |
12 | 165489 |
13 | 424451 |
14 | 1134849 |
15 | 3093893 |
16 | 7987289 |
17 | 21288933 |
18 | 57973543 |
19 | 150409931 |
20 | 399788279 |
21 | 1085870421 |
22 | 2831439537 |
23 | 7501994181 |
24 | 20330726077 |
25 | 53274740933 |
26 | 140615421393 |
27 | 380366331549 |
28 | 1002078031627 |
29 | 2634444052559 |
[1,3,9,25,63,171,471,1193,3209,8841,22537,60393, 165489,424451,1134849,3093893,7987289,21288933, 57973543,150409931,399788279,1085870421, 2831439537,7501994181,20330726077,53274740933, 140615421393,380366331549,1002078031627, 2634444052559] |