n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 12 |
5 | 36 |
6 | 121 |
7 | 418 |
8 | 1518 |
9 | 5680 |
10 | 21838 |
11 | 85728 |
12 | 342817 |
13 | 1391551 |
14 | 5723767 |
15 | 23807834 |
16 | 100015361 |
17 | 423803675 |
18 | 1809693470 |
19 | 7780676837 |
20 | 33658840612 |
21 | 146415125415 |
22 | 640107365528 |
23 | 2811273477261 |
24 | 12398413335191 |
25 | 54889792298990 |
26 | 243863779060244 |
27 | 1086965933597889 |
28 | 4859517276156715 |
[1,1,2,4,12,36,121,418,1518,5680,21838,85728, 342817,1391551,5723767,23807834,100015361, 423803675,1809693470,7780676837,33658840612, 146415125415,640107365528,2811273477261, 12398413335191,54889792298990,243863779060244, 1086965933597889,4859517276156715] |