n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 7 |
5 | 19 |
6 | 41 |
7 | 751 |
8 | 989 |
9 | 2857 |
10 | 16067 |
11 | 2171465 |
12 | 1364651 |
13 | 8181904909 |
14 | 90241897 |
15 | 35310023 |
16 | 15043611773 |
17 | 55294720874657 |
18 | 203732352169 |
19 | 69028763155644023 |
20 | 19470140241329 |
21 | 1022779523247467 |
22 | 396760150748100749 |
[1,1,1,7,19,41,751,989,2857,16067,2171465,1364651, 8181904909,90241897,35310023,15043611773, 55294720874657,203732352169,69028763155644023, 19470140241329,1022779523247467, 396760150748100749] |