n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 7 |
4 | 21 |
5 | 57 |
6 | 171 |
7 | 495 |
8 | 1485 |
9 | 4401 |
10 | 13203 |
11 | 39447 |
12 | 118341 |
13 | 354537 |
14 | 1063611 |
15 | 3189375 |
16 | 9568125 |
17 | 28700001 |
18 | 86100003 |
19 | 258286887 |
20 | 774860661 |
21 | 2324542617 |
22 | 6973627851 |
23 | 20920765455 |
24 | 62762296365 |
25 | 188286534801 |
26 | 564859604403 |
27 | 1694577750327 |
28 | 5083733250981 |
29 | 15251196564297 |
30 | 45753589692891 |
[1,3,7,21,57,171,495,1485,4401,13203,39447,118341, 354537,1063611,3189375,9568125,28700001,86100003, 258286887,774860661,2324542617,6973627851, 20920765455,62762296365,188286534801,564859604403, 1694577750327,5083733250981,15251196564297, 45753589692891] |