n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 7 |
5 | 18 |
6 | 64 |
7 | 226 |
8 | 856 |
9 | 3306 |
10 | 13249 |
11 | 53794 |
12 | 222717 |
13 | 933438 |
14 | 3960487 |
15 | 16970362 |
16 | 73381453 |
17 | 319817670 |
18 | 1403875491 |
19 | 6202064928 |
20 | 27559699507 |
21 | 123115236582 |
22 | 552654175124 |
23 | 2491870281372 |
24 | 11281732737898 |
25 | 51270697159708 |
26 | 233822055167579 |
27 | 1069835253304014 |
28 | 4909835353596645 |
29 | 22596879316320522 |
[1,1,2,7,18,64,226,856,3306,13249,53794,222717, 933438,3960487,16970362,73381453,319817670, 1403875491,6202064928,27559699507,123115236582, 552654175124,2491870281372,11281732737898, 51270697159708,233822055167579,1069835253304014, 4909835353596645,22596879316320522] |