n | a(n) |
---|---|
1 | 21 |
2 | 93 |
3 | 217 |
4 | 381 |
5 | 889 |
6 | 3937 |
7 | 24573 |
8 | 57337 |
9 | 253921 |
10 | 393213 |
11 | 917497 |
12 | 1040257 |
13 | 1572861 |
14 | 3670009 |
15 | 4063201 |
16 | 16252897 |
17 | 16646017 |
18 | 66584449 |
19 | 1073602561 |
20 | 4294434817 |
21 | 6442450941 |
22 | 15032385529 |
23 | 66571993057 |
24 | 68718821377 |
25 | 272730423169 |
[21,93,217,381,889,3937,24573,57337,253921,393213, 917497,1040257,1572861,3670009,4063201,16252897, 16646017,66584449,1073602561,4294434817, 6442450941,15032385529,66571993057,68718821377, 272730423169] |