n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 8 |
4 | 17 |
5 | 46 |
6 | 114 |
7 | 289 |
8 | 757 |
9 | 1964 |
10 | 5118 |
11 | 13391 |
12 | 35008 |
13 | 91589 |
14 | 239740 |
15 | 627506 |
16 | 1642656 |
17 | 4300361 |
18 | 11258087 |
19 | 29473546 |
20 | 77162161 |
21 | 202011991 |
22 | 528872756 |
23 | 1384604934 |
24 | 3624939359 |
25 | 9490209947 |
26 | 24845686106 |
27 | 65046840605 |
28 | 170294825972 |
[1,4,8,17,46,114,289,757,1964,5118,13391,35008, 91589,239740,627506,1642656,4300361,11258087, 29473546,77162161,202011991,528872756,1384604934, 3624939359,9490209947,24845686106,65046840605, 170294825972] |