n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 7 |
3 | 39 |
4 | 308 |
5 | 3013 |
6 | 33300 |
7 | 394340 |
8 | 4878109 |
9 | 62232321 |
10 | 812825244 |
11 | 10818489817 |
12 | 146250545528 |
13 | 2003199281223 |
14 | 27747288947266 |
15 | 388087900316025 |
16 | 5474206895126243 |
17 | 77795972452841542 |
18 | 1112947041203866164 |
19 | 16016508647052018408 |
20 | 231727628211887783830 |
21 | 3368855109532696440867 |
[1,2,7,39,308,3013,33300,394340,4878109,62232321, 812825244,10818489817,146250545528,2003199281223, 27747288947266,388087900316025,5474206895126243, 77795972452841542,1112947041203866164, 16016508647052018408,231727628211887783830, 3368855109532696440867] |