n | a(n) |
---|---|
1 | 3 |
2 | 9 |
3 | 23 |
4 | 61 |
5 | 161 |
6 | 425 |
7 | 1121 |
8 | 2957 |
9 | 7801 |
10 | 20581 |
11 | 54297 |
12 | 143245 |
13 | 377905 |
14 | 996981 |
15 | 2630217 |
16 | 6938989 |
17 | 18306305 |
18 | 48295333 |
19 | 127411801 |
20 | 336135325 |
21 | 886785649 |
22 | 2339500565 |
23 | 6172024649 |
24 | 16282914765 |
25 | 42957267425 |
26 | 113329023173 |
27 | 298982413497 |
[3,9,23,61,161,425,1121,2957,7801,20581,54297, 143245,377905,996981,2630217,6938989,18306305, 48295333,127411801,336135325,886785649,2339500565, 6172024649,16282914765,42957267425,113329023173, 298982413497] |