n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 2 |
6 | 3 |
7 | 6 |
8 | 12 |
9 | 25 |
10 | 54 |
11 | 120 |
12 | 278 |
13 | 657 |
14 | 1586 |
15 | 3885 |
16 | 9676 |
17 | 24350 |
18 | 61974 |
19 | 159066 |
20 | 411637 |
21 | 1072477 |
22 | 2812147 |
23 | 7414611 |
24 | 19650656 |
25 | 52319946 |
26 | 139898593 |
27 | 375536661 |
28 | 1011726481 |
29 | 2734793731 |
30 | 7415449225 |
31 | 20165442393 |
32 | 54986240994 |
33 | 150314506170 |
34 | 411889913114 |
35 | 1131183374539 |
36 | 3113153283443 |
37 | 8584839296108 |
38 | 23718157486109 |
39 | 65645273392938 |
40 | 181995130879151 |
41 | 505374042479921 |
42 | 1405493247220915 |
43 | 3914493122094481 |
44 | 10917513971606377 |
45 | 30489195524251154 |
46 | 85254349619909519 |
47 | 238677545463592954 |
48 | 668973050139380099 |
49 | 1877097093098685409 |
50 | 5272616851780131627 |
[1,0,1,1,1,2,3,6,12,25,54,120,278,657,1586,3885, 9676,24350,61974,159066,411637,1072477,2812147, 7414611,19650656,52319946,139898593,375536661, 1011726481,2734793731,7415449225,20165442393, 54986240994,150314506170,411889913114, 1131183374539,3113153283443,8584839296108, 23718157486109,65645273392938,181995130879151, 505374042479921,1405493247220915,3914493122094481, 10917513971606377,30489195524251154, 85254349619909519,238677545463592954, 668973050139380099,1877097093098685409, 5272616851780131627] |