n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 3 |
4 | 7 |
5 | 15 |
6 | 43 |
7 | 131 |
8 | 468 |
9 | 1776 |
10 | 7559 |
11 | 34022 |
12 | 166749 |
13 | 853823 |
14 | 4682358 |
15 | 26720781 |
16 | 161074458 |
17 | 1004485751 |
18 | 6576974188 |
19 | 44322716809 |
20 | 311440019349 |
21 | 2247888977510 |
22 | 16819336465164 |
23 | 128915407382036 |
24 | 1021269823516449 |
25 | 8261243728564640 |
26 | 68848043979970646 |
[1,2,3,7,15,43,131,468,1776,7559,34022,166749, 853823,4682358,26720781,161074458,1004485751, 6576974188,44322716809,311440019349,2247888977510, 16819336465164,128915407382036,1021269823516449, 8261243728564640,68848043979970646] |