n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 3 |
4 | 8 |
5 | 14 |
6 | 40 |
7 | 72 |
8 | 208 |
9 | 376 |
10 | 1088 |
11 | 1968 |
12 | 5696 |
13 | 10304 |
14 | 29824 |
15 | 53952 |
16 | 156160 |
17 | 282496 |
18 | 817664 |
19 | 1479168 |
20 | 4281344 |
21 | 7745024 |
22 | 22417408 |
23 | 40553472 |
24 | 117379072 |
25 | 212340736 |
26 | 614604800 |
27 | 1111830528 |
28 | 3218112512 |
29 | 5821620224 |
30 | 16850255872 |
[1,1,2,3,8,14,40,72,208,376,1088,1968,5696,10304, 29824,53952,156160,282496,817664,1479168,4281344, 7745024,22417408,40553472,117379072,212340736, 614604800,1111830528,3218112512,5821620224, 16850255872] |