n | a(n) |
---|---|
1 | 0 |
2 | 10 |
3 | 28 |
4 | 200 |
5 | 876 |
6 | 4838 |
7 | 23840 |
8 | 124114 |
9 | 628932 |
10 | 3229072 |
11 | 16473124 |
12 | 84299894 |
13 | 430743744 |
14 | 2202581690 |
15 | 11258708588 |
16 | 57560078392 |
17 | 294250374492 |
18 | 1504287249286 |
19 | 7690165809760 |
20 | 39313791606722 |
21 | 200979640215060 |
22 | 1027448868120896 |
[0,10,28,200,876,4838,23840,124114,628932,3229072, 16473124,84299894,430743744,2202581690, 11258708588,57560078392,294250374492, 1504287249286,7690165809760,39313791606722, 200979640215060,1027448868120896] |