n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 8 |
5 | 20 |
6 | 42 |
7 | 102 |
8 | 250 |
9 | 610 |
10 | 1486 |
11 | 3710 |
12 | 9228 |
13 | 23050 |
14 | 57718 |
15 | 145288 |
16 | 365820 |
17 | 922194 |
18 | 2327914 |
19 | 5885800 |
20 | 14890796 |
21 | 37701452 |
22 | 95550472 |
23 | 242325118 |
24 | 614869792 |
25 | 1561228066 |
[1,2,4,8,20,42,102,250,610,1486,3710,9228,23050, 57718,145288,365820,922194,2327914,5885800, 14890796,37701452,95550472,242325118,614869792, 1561228066] |