n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 8 |
4 | 19 |
5 | 50 |
6 | 136 |
7 | 368 |
8 | 985 |
9 | 2618 |
10 | 6940 |
11 | 18392 |
12 | 48763 |
13 | 129338 |
14 | 343120 |
15 | 910304 |
16 | 2415025 |
17 | 6406898 |
18 | 16996852 |
19 | 45090728 |
20 | 119620579 |
21 | 317340098 |
22 | 841868632 |
23 | 2233386320 |
24 | 5924932489 |
25 | 15718204970 |
26 | 41698695820 |
27 | 110622122360 |
[1,2,4,8,19,50,136,368,985,2618,6940,18392,48763, 129338,343120,910304,2415025,6406898,16996852, 45090728,119620579,317340098,841868632,2233386320, 5924932489,15718204970,41698695820,110622122360] |