n | a(n) |
---|---|
0 | 1 |
1 | 8 |
2 | 50 |
3 | 248 |
4 | 1048 |
5 | 3952 |
6 | 13696 |
7 | 44480 |
8 | 137216 |
9 | 406016 |
10 | 1160704 |
11 | 3223552 |
12 | 8734720 |
13 | 23171072 |
14 | 60342272 |
15 | 154615808 |
16 | 390529024 |
17 | 973864960 |
18 | 2400845824 |
19 | 5857869824 |
20 | 14159446016 |
21 | 33935065088 |
22 | 80698408960 |
23 | 190534647808 |
24 | 446911479808 |
25 | 1041898668032 |
26 | 2415348678656 |
27 | 5570035712000 |
[1,8,50,248,1048,3952,13696,44480,137216,406016, 1160704,3223552,8734720,23171072,60342272, 154615808,390529024,973864960,2400845824, 5857869824,14159446016,33935065088,80698408960, 190534647808,446911479808,1041898668032, 2415348678656,5570035712000] |