n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 4 |
3 | 28 |
4 | 124 |
5 | 532 |
6 | 2164 |
7 | 8788 |
8 | 35284 |
9 | 141628 |
10 | 567004 |
11 | 2269948 |
12 | 9081724 |
13 | 36334492 |
14 | 145345564 |
15 | 581412508 |
16 | 2325680284 |
17 | 9302841652 |
18 | 37211487124 |
19 | 148846430068 |
20 | 595386201844 |
21 | 2381546731732 |
22 | 9526188851284 |
23 | 38104763100628 |
24 | 152419060098004 |
25 | 609676271166388 |
26 | 2438705115439924 |
27 | 9754820584849588 |
[0,0,4,28,124,532,2164,8788,35284,141628,567004, 2269948,9081724,36334492,145345564,581412508, 2325680284,9302841652,37211487124,148846430068, 595386201844,2381546731732,9526188851284, 38104763100628,152419060098004,609676271166388, 2438705115439924,9754820584849588] |