n | a(n) |
---|---|
1 | 0 |
2 | 2 |
3 | 2 |
4 | 4 |
5 | 6 |
6 | 12 |
7 | 18 |
8 | 34 |
9 | 54 |
10 | 100 |
11 | 170 |
12 | 310 |
13 | 542 |
14 | 1000 |
15 | 1786 |
16 | 3292 |
17 | 5990 |
18 | 11100 |
19 | 20434 |
20 | 38102 |
21 | 70858 |
22 | 132912 |
23 | 249290 |
24 | 470300 |
25 | 888158 |
26 | 1684488 |
27 | 3199258 |
28 | 6095502 |
29 | 11631550 |
30 | 22249232 |
31 | 42621834 |
32 | 81804946 |
33 | 157221374 |
34 | 302632804 |
35 | 583237734 |
36 | 1125468466 |
37 | 2174144774 |
[0,2,2,4,6,12,18,34,54,100,170,310,542,1000,1786, 3292,5990,11100,20434,38102,70858,132912,249290, 470300,888158,1684488,3199258,6095502,11631550, 22249232,42621834,81804946,157221374,302632804, 583237734,1125468466,2174144774] |