n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 4 |
4 | 19 |
5 | 76 |
6 | 316 |
7 | 1264 |
8 | 5101 |
9 | 20404 |
10 | 81796 |
11 | 327184 |
12 | 1309444 |
13 | 5237776 |
14 | 20953936 |
15 | 83815744 |
16 | 335274259 |
17 | 1341097036 |
18 | 5364433276 |
19 | 21457733104 |
20 | 85831112764 |
21 | 343324451056 |
22 | 1373298525616 |
23 | 5493194102464 |
24 | 21972779294716 |
[0,0,1,4,19,76,316,1264,5101,20404,81796,327184, 1309444,5237776,20953936,83815744,335274259, 1341097036,5364433276,21457733104,85831112764, 343324451056,1373298525616,5493194102464, 21972779294716] |