n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 8 |
3 | 20 |
4 | 55 |
5 | 148 |
6 | 400 |
7 | 1086 |
8 | 2948 |
9 | 8000 |
10 | 21716 |
11 | 58945 |
12 | 160000 |
13 | 434307 |
14 | 1178891 |
15 | 3200000 |
16 | 8686137 |
17 | 23577802 |
18 | 64000000 |
19 | 173722728 |
20 | 471556032 |
21 | 1280000000 |
22 | 3474454550 |
23 | 9431120637 |
24 | 25600000000 |
25 | 69489090985 |
26 | 188622412731 |
27 | 512000000000 |
28 | 1389781819697 |
[1,3,8,20,55,148,400,1086,2948,8000,21716,58945, 160000,434307,1178891,3200000,8686137,23577802, 64000000,173722728,471556032,1280000000, 3474454550,9431120637,25600000000,69489090985, 188622412731,512000000000,1389781819697] |