n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 3 |
3 | 6 |
4 | 12 |
5 | 25 |
6 | 52 |
7 | 109 |
8 | 228 |
9 | 477 |
10 | 999 |
11 | 2093 |
12 | 4385 |
13 | 9188 |
14 | 19251 |
15 | 40336 |
16 | 84516 |
17 | 177085 |
18 | 371045 |
19 | 777448 |
20 | 1628982 |
21 | 3413196 |
22 | 7151649 |
23 | 14984807 |
24 | 31397576 |
25 | 65787152 |
26 | 137843423 |
27 | 288822495 |
28 | 605168036 |
[0,2,3,6,12,25,52,109,228,477,999,2093,4385,9188, 19251,40336,84516,177085,371045,777448,1628982, 3413196,7151649,14984807,31397576,65787152, 137843423,288822495,605168036] |