n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 6 |
5 | 22 |
6 | 88 |
7 | 369 |
8 | 1597 |
9 | 7078 |
10 | 31966 |
11 | 146592 |
12 | 680826 |
13 | 3195883 |
14 | 15138737 |
15 | 72274885 |
16 | 347411257 |
17 | 1679958814 |
18 | 8166820486 |
19 | 39889343392 |
20 | 195658510368 |
21 | 963381098208 |
22 | 4759922215444 |
23 | 23592260956562 |
24 | 117270856692388 |
[1,1,2,6,22,88,369,1597,7078,31966,146592,680826, 3195883,15138737,72274885,347411257,1679958814, 8166820486,39889343392,195658510368,963381098208, 4759922215444,23592260956562,117270856692388] |