n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 22 |
3 | 166 |
4 | 1642 |
5 | 20254 |
6 | 299722 |
7 | 5174446 |
8 | 102094042 |
9 | 2266154014 |
10 | 55890234922 |
11 | 1516265078926 |
12 | 44874837768442 |
13 | 1438774580904574 |
14 | 49678366226498122 |
15 | 1837828899444250606 |
16 | 72522300447277154842 |
17 | 3040654011774599283934 |
18 | 134985159308312666889322 |
[1,4,22,166,1642,20254,299722,5174446,102094042, 2266154014,55890234922,1516265078926, 44874837768442,1438774580904574,49678366226498122, 1837828899444250606,72522300447277154842, 3040654011774599283934,134985159308312666889322] |