n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 6 |
4 | 22 |
5 | 64 |
6 | 227 |
7 | 776 |
8 | 2854 |
9 | 10455 |
10 | 39319 |
11 | 149787 |
12 | 579560 |
13 | 2257337 |
14 | 8887284 |
15 | 35287573 |
16 | 141013188 |
17 | 566875691 |
18 | 2292206719 |
19 | 9315490488 |
20 | 38020945055 |
21 | 155804714945 |
22 | 640940906466 |
23 | 2645526853223 |
24 | 10952645997032 |
25 | 45477822976693 |
26 | 189341279059823 |
27 | 790216314543537 |
28 | 3305546258574085 |
[1,1,3,6,22,64,227,776,2854,10455,39319,149787, 579560,2257337,8887284,35287573,141013188, 566875691,2292206719,9315490488,38020945055, 155804714945,640940906466,2645526853223, 10952645997032,45477822976693,189341279059823, 790216314543537,3305546258574085] |