n | a(n) |
---|---|
2 | 1 |
3 | 2 |
4 | 6 |
5 | 14 |
6 | 38 |
7 | 97 |
8 | 260 |
9 | 688 |
10 | 1856 |
11 | 4994 |
12 | 13550 |
13 | 36791 |
14 | 100302 |
15 | 273824 |
16 | 749316 |
17 | 2053247 |
18 | 5635266 |
19 | 15484532 |
20 | 42599485 |
21 | 117312742 |
22 | 323373356 |
23 | 892139389 |
24 | 2463252315 |
25 | 6806148956 |
26 | 18818714543 |
27 | 52065725034 |
28 | 144135111504 |
29 | 399232819042 |
30 | 1106385615943 |
[1,2,6,14,38,97,260,688,1856,4994,13550,36791, 100302,273824,749316,2053247,5635266,15484532, 42599485,117312742,323373356,892139389,2463252315, 6806148956,18818714543,52065725034,144135111504, 399232819042,1106385615943] |