n | a(n) |
---|---|
8 | 1 |
9 | 1 |
10 | 6 |
11 | 25 |
12 | 104 |
13 | 384 |
14 | 1380 |
15 | 4729 |
16 | 15806 |
17 | 51478 |
18 | 164788 |
19 | 519296 |
20 | 1617066 |
21 | 4983855 |
22 | 15233671 |
23 | 46235252 |
24 | 139506803 |
25 | 418838281 |
26 | 1252174861 |
27 | 3730058316 |
28 | 11077154790 |
29 | 32808815240 |
30 | 96953599162 |
31 | 285945645659 |
32 | 841909040785 |
33 | 2475184643011 |
34 | 7267678432397 |
35 | 21315839832323 |
[1,1,6,25,104,384,1380,4729,15806,51478,164788, 519296,1617066,4983855,15233671,46235252, 139506803,418838281,1252174861,3730058316, 11077154790,32808815240,96953599162,285945645659, 841909040785,2475184643011,7267678432397, 21315839832323] |