n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 27 |
4 | 292 |
5 | 4425 |
6 | 89106 |
7 | 2280901 |
8 | 71928872 |
9 | 2728450017 |
10 | 122145511510 |
11 | 6354868381521 |
12 | 379376236939404 |
13 | 25710543779239501 |
14 | 1960001963705060926 |
15 | 166753195643254805565 |
16 | 15724259680648667902096 |
17 | 1633462474351643785483457 |
18 | 185931510605274506452763166 |
[1,1,4,27,292,4425,89106,2280901,71928872, 2728450017,122145511510,6354868381521, 379376236939404,25710543779239501, 1960001963705060926,166753195643254805565, 15724259680648667902096,1633462474351643785483457, 185931510605274506452763166] |