n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 3 |
3 | 12 |
4 | 49 |
5 | 195 |
6 | 780 |
7 | 3121 |
8 | 12483 |
9 | 49932 |
10 | 199729 |
11 | 798915 |
12 | 3195660 |
13 | 12782641 |
14 | 51130563 |
15 | 204522252 |
16 | 818089009 |
17 | 3272356035 |
18 | 13089424140 |
19 | 52357696561 |
20 | 209430786243 |
21 | 837723144972 |
22 | 3350892579889 |
23 | 13403570319555 |
24 | 53614281278220 |
25 | 214457125112881 |
[0,1,3,12,49,195,780,3121,12483,49932,199729, 798915,3195660,12782641,51130563,204522252, 818089009,3272356035,13089424140,52357696561, 209430786243,837723144972,3350892579889, 13403570319555,53614281278220,214457125112881] |