n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 16 |
3 | 44 |
4 | 122 |
5 | 340 |
6 | 950 |
7 | 2658 |
8 | 7442 |
9 | 20844 |
10 | 58392 |
11 | 163594 |
12 | 458356 |
13 | 1284250 |
14 | 3598338 |
15 | 10082246 |
16 | 28249720 |
17 | 79153804 |
18 | 221783810 |
19 | 621424108 |
20 | 1741191198 |
21 | 4878708658 |
22 | 13669836930 |
23 | 38302030548 |
24 | 107319902744 |
25 | 300703682402 |
[1,6,16,44,122,340,950,2658,7442,20844,58392, 163594,458356,1284250,3598338,10082246,28249720, 79153804,221783810,621424108,1741191198, 4878708658,13669836930,38302030548,107319902744, 300703682402] |