n | a(n) |
---|---|
1 | 1 |
2 | 8 |
3 | 31 |
4 | 90 |
5 | 225 |
6 | 516 |
7 | 1123 |
8 | 2366 |
9 | 4885 |
10 | 9960 |
11 | 20151 |
12 | 40578 |
13 | 81481 |
14 | 163340 |
15 | 327115 |
16 | 654726 |
17 | 1310013 |
18 | 2620656 |
19 | 5242015 |
20 | 10484810 |
21 | 20970481 |
22 | 41941908 |
23 | 83884851 |
24 | 167770830 |
25 | 335542885 |
26 | 671087096 |
27 | 1342175623 |
28 | 2684352786 |
[1,8,31,90,225,516,1123,2366,4885,9960,20151, 40578,81481,163340,327115,654726,1310013,2620656, 5242015,10484810,20970481,41941908,83884851, 167770830,335542885,671087096,1342175623, 2684352786] |