n | a(n) |
---|---|
1 | 3 |
2 | 3 |
3 | 7 |
4 | 15 |
5 | 36 |
6 | 79 |
7 | 195 |
8 | 477 |
9 | 1209 |
10 | 3168 |
11 | 8415 |
12 | 22806 |
13 | 62412 |
14 | 172887 |
15 | 481552 |
16 | 1351485 |
17 | 3808080 |
18 | 10780653 |
19 | 30615351 |
20 | 87226932 |
21 | 249144506 |
22 | 713378655 |
23 | 2046856563 |
24 | 5884468110 |
25 | 16946569332 |
26 | 48883597728 |
27 | 141217159239 |
[3,3,7,15,36,79,195,477,1209,3168,8415,22806, 62412,172887,481552,1351485,3808080,10780653, 30615351,87226932,249144506,713378655,2046856563, 5884468110,16946569332,48883597728,141217159239] |