n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 11 |
5 | 43 |
6 | 182 |
7 | 806 |
8 | 3687 |
9 | 17297 |
10 | 82753 |
11 | 402207 |
12 | 1980407 |
13 | 9857715 |
14 | 49522564 |
15 | 250768564 |
16 | 1278600022 |
17 | 6558731904 |
18 | 33823966611 |
19 | 175264755549 |
20 | 912043488146 |
21 | 4764361204130 |
22 | 24974974692240 |
23 | 131335127655540 |
[0,1,1,3,11,43,182,806,3687,17297,82753,402207, 1980407,9857715,49522564,250768564,1278600022, 6558731904,33823966611,175264755549,912043488146, 4764361204130,24974974692240,131335127655540] |