n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | 4 |
4 | 6 |
5 | 16 |
6 | 37 |
7 | 92 |
8 | 245 |
9 | 560 |
10 | 1426 |
11 | 3720 |
12 | 9069 |
13 | 22808 |
14 | 58177 |
15 | 145660 |
16 | 366318 |
17 | 925536 |
18 | 2331269 |
19 | 5872212 |
20 | 14802941 |
21 | 37311528 |
22 | 94038250 |
23 | 236999064 |
24 | 597348237 |
25 | 1505640016 |
26 | 3794761257 |
27 | 9564393972 |
28 | 24106951622 |
29 | 60759989040 |
30 | 153141435269 |
31 | 385986293964 |
[1,0,1,4,6,16,37,92,245,560,1426,3720,9069,22808, 58177,145660,366318,925536,2331269,5872212, 14802941,37311528,94038250,236999064,597348237, 1505640016,3794761257,9564393972,24106951622, 60759989040,153141435269,385986293964] |