n | a(n) |
---|---|
2 | 1 |
3 | 2 |
4 | 3 |
5 | 4 |
6 | 6 |
7 | 12 |
8 | 28 |
9 | 65 |
10 | 146 |
11 | 327 |
12 | 749 |
13 | 1756 |
14 | 4165 |
15 | 9913 |
16 | 23652 |
17 | 56687 |
18 | 136627 |
19 | 330969 |
20 | 804915 |
21 | 1963830 |
22 | 4805523 |
23 | 11793046 |
24 | 29019930 |
25 | 71589861 |
26 | 177006752 |
27 | 438561959 |
28 | 1088714711 |
29 | 2707615555 |
30 | 6745272783 |
31 | 16830750107 |
32 | 42058592797 |
33 | 105248042792 |
[1,2,3,4,6,12,28,65,146,327,749,1756,4165,9913, 23652,56687,136627,330969,804915,1963830,4805523, 11793046,29019930,71589861,177006752,438561959, 1088714711,2707615555,6745272783,16830750107, 42058592797,105248042792] |