n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 6 |
3 | 14 |
4 | 36 |
5 | 108 |
6 | 352 |
7 | 1182 |
8 | 4116 |
9 | 14602 |
10 | 52488 |
11 | 190746 |
12 | 699252 |
13 | 2581428 |
14 | 9587580 |
15 | 35792568 |
16 | 134219796 |
17 | 505294128 |
18 | 1908881900 |
19 | 7233642930 |
20 | 27487816992 |
21 | 104715443852 |
22 | 399822505524 |
23 | 1529755490574 |
24 | 5864062367252 |
25 | 22517998808028 |
[1,3,6,14,36,108,352,1182,4116,14602,52488,190746, 699252,2581428,9587580,35792568,134219796, 505294128,1908881900,7233642930,27487816992, 104715443852,399822505524,1529755490574, 5864062367252,22517998808028] |