n | a(n) |
---|---|
1 | 5 |
2 | 15 |
3 | 45 |
4 | 140 |
5 | 441 |
6 | 1382 |
7 | 4322 |
8 | 13511 |
9 | 42238 |
10 | 132051 |
11 | 412840 |
12 | 1290698 |
13 | 4035218 |
14 | 12615643 |
15 | 39441343 |
16 | 123308779 |
17 | 385510576 |
18 | 1205254047 |
19 | 3768086810 |
20 | 11780485818 |
21 | 36830320820 |
22 | 115145720853 |
23 | 359989724116 |
24 | 1125466066030 |
25 | 3518638952555 |
[5,15,45,140,441,1382,4322,13511,42238,132051, 412840,1290698,4035218,12615643,39441343, 123308779,385510576,1205254047,3768086810, 11780485818,36830320820,115145720853,359989724116, 1125466066030,3518638952555] |