n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 1 |
3 | 7 |
4 | 9 |
5 | 21 |
6 | 388 |
7 | 701 |
8 | 2789 |
9 | 8581 |
10 | 325116 |
11 | 725715 |
12 | 3549362 |
13 | 15974921 |
14 | 77157109 |
15 | 4774872394 |
16 | 13166159997 |
17 | 74350315389 |
18 | 375874959532 |
19 | 2464017881123 |
20 | 14085616954310 |
21 | 1537975786987987 |
22 | 4933351699929687 |
[1,2,1,7,9,21,388,701,2789,8581,325116,725715, 3549362,15974921,77157109,4774872394,13166159997, 74350315389,375874959532,2464017881123, 14085616954310,1537975786987987,4933351699929687] |