n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 6 |
5 | 22 |
6 | 88 |
7 | 370 |
8 | 1607 |
9 | 7150 |
10 | 32418 |
11 | 149246 |
12 | 695840 |
13 | 3278942 |
14 | 15591708 |
15 | 74721660 |
16 | 360540041 |
17 | 1750069638 |
18 | 8539926158 |
19 | 41869742140 |
20 | 206149706634 |
21 | 1018875856490 |
22 | 5053136206216 |
23 | 25140141786040 |
24 | 125436643981858 |
[1,1,2,6,22,88,370,1607,7150,32418,149246,695840, 3278942,15591708,74721660,360540041,1750069638, 8539926158,41869742140,206149706634,1018875856490, 5053136206216,25140141786040,125436643981858] |