n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 7 |
7 | 21 |
8 | 47 |
9 | 187 |
10 | 1039 |
11 | 7375 |
12 | 57703 |
13 | 534255 |
14 | 6065861 |
15 | 87670715 |
16 | 1568278041 |
17 | 34768369321 |
18 | 953623406901 |
19 | 31496022601955 |
20 | 1268361436313019 |
21 | 63421807483845045 |
[1,1,1,1,1,7,21,47,187,1039,7375,57703,534255, 6065861,87670715,1568278041,34768369321, 953623406901,31496022601955,1268361436313019, 63421807483845045] |