n | a(n) |
---|---|
1 | 171 |
2 | 309 |
3 | 579 |
4 | 1233 |
5 | 2691 |
6 | 6417 |
7 | 15555 |
8 | 40041 |
9 | 104211 |
10 | 282609 |
11 | 771699 |
12 | 2167353 |
13 | 6111171 |
14 | 17563617 |
15 | 50584035 |
16 | 147570921 |
17 | 430968051 |
18 | 1269505809 |
19 | 3741492819 |
20 | 11090690073 |
21 | 32883337251 |
22 | 97873303617 |
23 | 291340216515 |
24 | 869463485001 |
[171,309,579,1233,2691,6417,15555,40041,104211, 282609,771699,2167353,6111171,17563617,50584035, 147570921,430968051,1269505809,3741492819, 11090690073,32883337251,97873303617,291340216515, 869463485001] |