n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 28 |
3 | 256 |
4 | 2716 |
5 | 31504 |
6 | 387136 |
7 | 4951552 |
8 | 65218204 |
9 | 878536624 |
10 | 12046924528 |
11 | 167595457792 |
12 | 2359613230144 |
13 | 33557651538688 |
14 | 481365424895488 |
15 | 6956365106016256 |
16 | 101181938814289564 |
17 | 1480129751586116848 |
18 | 21761706991570726096 |
19 | 321401321741959062016 |
[1,4,28,256,2716,31504,387136,4951552,65218204, 878536624,12046924528,167595457792,2359613230144, 33557651538688,481365424895488,6956365106016256, 101181938814289564,1480129751586116848, 21761706991570726096,321401321741959062016] |