n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 16 |
3 | 46 |
4 | 316 |
5 | 1276 |
6 | 6976 |
7 | 31816 |
8 | 161296 |
9 | 768016 |
10 | 3794176 |
11 | 18340576 |
12 | 89799616 |
13 | 436367296 |
14 | 2129929216 |
15 | 10369000576 |
16 | 50557010176 |
17 | 246280028416 |
18 | 1200358199296 |
19 | 5848636796416 |
20 | 28502288382976 |
21 | 138885491915776 |
[1,1,16,46,316,1276,6976,31816,161296,768016, 3794176,18340576,89799616,436367296,2129929216, 10369000576,50557010176,246280028416, 1200358199296,5848636796416,28502288382976, 138885491915776] |