n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 9 |
5 | 21 |
6 | 99 |
7 | 225 |
8 | 729 |
9 | 2187 |
10 | 6561 |
11 | 19845 |
12 | 58563 |
13 | 177633 |
14 | 531441 |
15 | 1594323 |
16 | 4782969 |
17 | 14344533 |
18 | 43059843 |
19 | 129127041 |
20 | 387420489 |
21 | 1162261467 |
[1,1,3,9,21,99,225,729,2187,6561,19845,58563, 177633,531441,1594323,4782969,14344533,43059843, 129127041,387420489,1162261467] |