n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 9 |
4 | 38 |
5 | 168 |
6 | 915 |
7 | 5225 |
8 | 34228 |
9 | 236622 |
10 | 1805297 |
11 | 14498751 |
12 | 125907798 |
13 | 1146476984 |
14 | 11129874215 |
15 | 112934907867 |
16 | 1209762361679 |
17 | 13499714095281 |
18 | 157931096158594 |
19 | 1918777335806274 |
20 | 24309294470496502 |
21 | 318987321135326838 |
22 | 4346474397776153974 |
[1,1,3,9,38,168,915,5225,34228,236622,1805297, 14498751,125907798,1146476984,11129874215, 112934907867,1209762361679,13499714095281, 157931096158594,1918777335806274, 24309294470496502,318987321135326838, 4346474397776153974] |