n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 26 |
3 | 148 |
4 | 867 |
5 | 5048 |
6 | 29428 |
7 | 171512 |
8 | 999653 |
9 | 5826396 |
10 | 33958734 |
11 | 197925996 |
12 | 1153597255 |
13 | 6723657520 |
14 | 39188347880 |
15 | 228406429744 |
16 | 1331250230601 |
17 | 7759094953844 |
18 | 45223319492482 |
19 | 263580822001028 |
20 | 1536261612513707 |
21 | 8953988853081192 |
22 | 52187671505973468 |
[1,4,26,148,867,5048,29428,171512,999653,5826396, 33958734,197925996,1153597255,6723657520, 39188347880,228406429744,1331250230601, 7759094953844,45223319492482,263580822001028, 1536261612513707,8953988853081192, 52187671505973468] |