n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 5 |
3 | 44 |
4 | 321 |
5 | 2404 |
6 | 14692 |
7 | 98831 |
8 | 684729 |
9 | 4642752 |
10 | 31650422 |
11 | 213894450 |
12 | 1451388234 |
13 | 9868405649 |
14 | 66968132029 |
15 | 454745989239 |
16 | 3086695784357 |
17 | 20954497956277 |
18 | 142275120134328 |
19 | 965860855067492 |
20 | 6557295186301572 |
21 | 44517125016379779 |
22 | 302224231486908372 |
[1,1,5,44,321,2404,14692,98831,684729,4642752, 31650422,213894450,1451388234,9868405649, 66968132029,454745989239,3086695784357, 20954497956277,142275120134328,965860855067492, 6557295186301572,44517125016379779, 302224231486908372] |