n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 7 |
6 | 31 |
7 | 106 |
8 | 301 |
9 | 742 |
10 | 1638 |
11 | 3312 |
12 | 6237 |
13 | 11077 |
14 | 18733 |
15 | 30394 |
16 | 47593 |
17 | 72268 |
18 | 106828 |
19 | 154224 |
20 | 218025 |
21 | 302499 |
22 | 412699 |
23 | 554554 |
24 | 734965 |
25 | 961906 |
26 | 1244530 |
27 | 1593280 |
28 | 2020005 |
29 | 2538081 |
30 | 3162537 |
31 | 3910186 |
32 | 4799761 |
33 | 5852056 |
34 | 7090072 |
35 | 8539168 |
36 | 10227217 |
37 | 12184767 |
38 | 14445207 |
39 | 17044938 |
40 | 20023549 |
41 | 23423998 |
42 | 27292798 |
[0,0,0,1,7,31,106,301,742,1638,3312,6237,11077, 18733,30394,47593,72268,106828,154224,218025, 302499,412699,554554,734965,961906,1244530, 1593280,2020005,2538081,3162537,3910186,4799761, 5852056,7090072,8539168,10227217,12184767, 14445207,17044938,20023549,23423998,27292798] |