n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 8 |
3 | 20 |
4 | 50 |
5 | 119 |
6 | 280 |
7 | 645 |
8 | 1466 |
9 | 3280 |
10 | 7262 |
11 | 15937 |
12 | 34720 |
13 | 75108 |
14 | 161552 |
15 | 345785 |
16 | 736974 |
17 | 1564762 |
18 | 3311206 |
19 | 6985780 |
20 | 14698342 |
21 | 30850276 |
22 | 64607782 |
23 | 135030018 |
24 | 281689074 |
25 | 586636098 |
26 | 1219788256 |
27 | 2532608855 |
28 | 5251282902 |
29 | 10874696106 |
30 | 22493653324 |
31 | 46475828418 |
[1,3,8,20,50,119,280,645,1466,3280,7262,15937, 34720,75108,161552,345785,736974,1564762,3311206, 6985780,14698342,30850276,64607782,135030018, 281689074,586636098,1219788256,2532608855, 5251282902,10874696106,22493653324,46475828418] |