n | a(n) |
---|---|
4 | 1 |
5 | 46 |
6 | 551 |
7 | 3785 |
8 | 18955 |
9 | 77533 |
10 | 276408 |
11 | 895103 |
12 | 2708322 |
13 | 7811510 |
14 | 21791338 |
15 | 59419294 |
16 | 159571139 |
17 | 424302452 |
18 | 1121168305 |
19 | 2951121095 |
20 | 7749900701 |
21 | 20324325571 |
22 | 53259796514 |
23 | 139506540045 |
24 | 365330860180 |
25 | 956582678652 |
26 | 2504546934692 |
27 | 6557230277964 |
28 | 17167369784405 |
[1,46,551,3785,18955,77533,276408,895103,2708322, 7811510,21791338,59419294,159571139,424302452, 1121168305,2951121095,7749900701,20324325571, 53259796514,139506540045,365330860180, 956582678652,2504546934692,6557230277964, 17167369784405] |