n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 14 |
5 | 38 |
6 | 94 |
7 | 248 |
8 | 628 |
9 | 1638 |
10 | 4190 |
11 | 10872 |
12 | 27940 |
13 | 72316 |
14 | 186260 |
15 | 481488 |
16 | 1241512 |
17 | 3207302 |
18 | 8274646 |
19 | 21369496 |
20 | 55148068 |
21 | 142396436 |
22 | 367537484 |
23 | 948920560 |
24 | 2449445432 |
25 | 6323741404 |
26 | 16324167564 |
27 | 42143003504 |
[1,1,2,6,14,38,94,248,628,1638,4190,10872,27940, 72316,186260,481488,1241512,3207302,8274646, 21369496,55148068,142396436,367537484,948920560, 2449445432,6323741404,16324167564,42143003504] |