n | a(n) |
---|---|
0 | 1 |
1 | 22 |
2 | 286 |
3 | 2860 |
4 | 24310 |
5 | 184756 |
6 | 1293292 |
7 | 8498776 |
8 | 53117350 |
9 | 318704100 |
10 | 1848483780 |
11 | 10418726760 |
12 | 57302997180 |
13 | 308554600200 |
14 | 1630931458200 |
15 | 8480843582640 |
16 | 43464323361030 |
17 | 219878341708740 |
18 | 1099391708543700 |
19 | 5439095821216200 |
20 | 26651569523959380 |
21 | 129450480544945560 |
[1,22,286,2860,24310,184756,1293292,8498776, 53117350,318704100,1848483780,10418726760, 57302997180,308554600200,1630931458200, 8480843582640,43464323361030,219878341708740, 1099391708543700,5439095821216200, 26651569523959380,129450480544945560] |