n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | 1 |
4 | 6 |
5 | 16 |
6 | 73 |
7 | 298 |
8 | 1453 |
9 | 7366 |
10 | 40689 |
11 | 238258 |
12 | 1483306 |
13 | 9746839 |
14 | 67415262 |
15 | 489048716 |
16 | 3710659737 |
17 | 29372630485 |
18 | 242021348787 |
19 | 2071598497189 |
20 | 18386889241210 |
21 | 168944811545046 |
22 | 1604584556714162 |
23 | 15731291424746912 |
24 | 159001720653174800 |
25 | 1654891767547439393 |
[1,0,1,1,6,16,73,298,1453,7366,40689,238258, 1483306,9746839,67415262,489048716,3710659737, 29372630485,242021348787,2071598497189, 18386889241210,168944811545046,1604584556714162, 15731291424746912,159001720653174800, 1654891767547439393] |