n | a(n) |
---|---|
1 | 0 |
2 | 19 |
3 | 40 |
4 | 166 |
5 | 824 |
6 | 3256 |
7 | 15028 |
8 | 64156 |
9 | 275764 |
10 | 1203956 |
11 | 5186196 |
12 | 22489732 |
13 | 97426420 |
14 | 421553284 |
15 | 1826019284 |
16 | 7905435556 |
17 | 34229151412 |
18 | 148217266564 |
19 | 641745438100 |
20 | 2778733096676 |
21 | 12031672904052 |
22 | 52095855239236 |
[0,19,40,166,824,3256,15028,64156,275764,1203956, 5186196,22489732,97426420,421553284,1826019284, 7905435556,34229151412,148217266564,641745438100, 2778733096676,12031672904052,52095855239236] |