n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 2 |
4 | 6 |
5 | 10 |
6 | 19 |
7 | 38 |
8 | 75 |
9 | 133 |
10 | 247 |
11 | 453 |
12 | 843 |
13 | 1520 |
14 | 2751 |
15 | 5043 |
16 | 9317 |
17 | 17220 |
18 | 31221 |
19 | 57070 |
20 | 99737 |
21 | 181693 |
22 | 328254 |
23 | 589930 |
[0,1,2,6,10,19,38,75,133,247,453,843,1520,2751, 5043,9317,17220,31221,57070,99737,181693,328254, 589930] |