n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 6 |
5 | 33 |
6 | 152 |
7 | 663 |
8 | 2778 |
9 | 11413 |
10 | 46332 |
11 | 186867 |
12 | 750878 |
13 | 3011025 |
14 | 12060480 |
15 | 48277423 |
16 | 193186146 |
17 | 772908429 |
18 | 3091983236 |
19 | 12368675691 |
20 | 49476275622 |
21 | 197908422985 |
22 | 791640682440 |
23 | 3166577409831 |
24 | 12666340397546 |
25 | 50665425902853 |
26 | 202661837829132 |
27 | 810647630936803 |
[0,0,0,1,6,33,152,663,2778,11413,46332,186867, 750878,3011025,12060480,48277423,193186146, 772908429,3091983236,12368675691,49476275622, 197908422985,791640682440,3166577409831, 12666340397546,50665425902853,202661837829132, 810647630936803] |