n | a(n) |
---|---|
1 | 4 |
2 | 12 |
3 | 40 |
4 | 112 |
5 | 352 |
6 | 832 |
7 | 2176 |
8 | 4864 |
9 | 11776 |
10 | 29696 |
11 | 63488 |
12 | 151552 |
13 | 335872 |
14 | 704512 |
15 | 1540096 |
16 | 3473408 |
17 | 7733248 |
18 | 15990784 |
19 | 35127296 |
20 | 74448896 |
21 | 153092096 |
22 | 331350016 |
23 | 696254464 |
24 | 1493172224 |
25 | 3254779904 |
26 | 6777995264 |
27 | 13824425984 |
28 | 28722593792 |
29 | 58518929408 |
30 | 121332826112 |
[4,12,40,112,352,832,2176,4864,11776,29696,63488, 151552,335872,704512,1540096,3473408,7733248, 15990784,35127296,74448896,153092096,331350016, 696254464,1493172224,3254779904,6777995264, 13824425984,28722593792,58518929408,121332826112] |