n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 11 |
3 | 52 |
4 | 227 |
5 | 944 |
6 | 3800 |
7 | 14944 |
8 | 57748 |
9 | 220128 |
10 | 829968 |
11 | 3101376 |
12 | 11502704 |
13 | 42393088 |
14 | 155392768 |
15 | 566918144 |
16 | 2059768384 |
17 | 7456496128 |
18 | 26905720576 |
19 | 96804463616 |
20 | 347386161920 |
21 | 1243665567744 |
22 | 4442849839104 |
23 | 15840448094208 |
[0,2,11,52,227,944,3800,14944,57748,220128,829968, 3101376,11502704,42393088,155392768,566918144, 2059768384,7456496128,26905720576,96804463616, 347386161920,1243665567744,4442849839104, 15840448094208] |