n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 13 |
6 | 41 |
7 | 132 |
8 | 470 |
9 | 1730 |
10 | 6649 |
11 | 26122 |
12 | 104814 |
13 | 426257 |
14 | 1754055 |
15 | 7282630 |
16 | 30470129 |
17 | 128304158 |
18 | 543303752 |
19 | 2311904374 |
20 | 9880776407 |
21 | 42394198909 |
22 | 182537610058 |
23 | 788473887942 |
24 | 3415782381520 |
25 | 14837307126498 |
26 | 64608442956047 |
27 | 281975101347994 |
28 | 1233237605651194 |
[1,1,2,5,13,41,132,470,1730,6649,26122,104814, 426257,1754055,7282630,30470129,128304158, 543303752,2311904374,9880776407,42394198909, 182537610058,788473887942,3415782381520, 14837307126498,64608442956047,281975101347994, 1233237605651194] |