n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 9 |
3 | 25 |
4 | 67 |
5 | 151 |
6 | 349 |
7 | 805 |
8 | 1831 |
9 | 4069 |
10 | 9063 |
11 | 19767 |
12 | 42975 |
13 | 92829 |
14 | 199123 |
15 | 425229 |
16 | 904225 |
17 | 1915381 |
18 | 4044235 |
19 | 8513505 |
20 | 17872759 |
21 | 37432615 |
22 | 78225409 |
23 | 163146639 |
24 | 339638307 |
25 | 705882493 |
26 | 1464816541 |
27 | 3035420871 |
28 | 6281814787 |
29 | 12984437515 |
30 | 26808298093 |
31 | 55291335127 |
[1,3,9,25,67,151,349,805,1831,4069,9063,19767, 42975,92829,199123,425229,904225,1915381,4044235, 8513505,17872759,37432615,78225409,163146639, 339638307,705882493,1464816541,3035420871, 6281814787,12984437515,26808298093,55291335127] |