n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 1 |
4 | 3 |
5 | 8 |
6 | 21 |
7 | 54 |
8 | 138 |
9 | 355 |
10 | 924 |
11 | 2432 |
12 | 6461 |
13 | 17301 |
14 | 46657 |
15 | 126656 |
16 | 345972 |
17 | 950611 |
18 | 2626253 |
19 | 7292268 |
20 | 20342805 |
21 | 56993909 |
22 | 160317859 |
23 | 452642235 |
24 | 1282466920 |
25 | 3645564511 |
26 | 10395117584 |
27 | 29727982740 |
28 | 85251828792 |
29 | 245120276345 |
30 | 706529708510 |
31 | 2041260301955 |
32 | 5910531770835 |
33 | 17149854645474 |
34 | 49859456251401 |
35 | 145223624492108 |
36 | 423722038708874 |
37 | 1238318400527185 |
[0,0,1,3,8,21,54,138,355,924,2432,6461,17301, 46657,126656,345972,950611,2626253,7292268, 20342805,56993909,160317859,452642235,1282466920, 3645564511,10395117584,29727982740,85251828792, 245120276345,706529708510,2041260301955, 5910531770835,17149854645474,49859456251401, 145223624492108,423722038708874,1238318400527185] |