n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 7 |
3 | 30 |
4 | 159 |
5 | 1056 |
6 | 8812 |
7 | 92062 |
8 | 1200415 |
9 | 19512990 |
10 | 395379699 |
11 | 9991017068 |
12 | 315094522052 |
13 | 12413464676162 |
14 | 611490149713956 |
15 | 37699912801819870 |
16 | 2911578809929672737 |
17 | 281916836769424155940 |
18 | 34249052273023310929439 |
[1,2,7,30,159,1056,8812,92062,1200415,19512990, 395379699,9991017068,315094522052,12413464676162, 611490149713956,37699912801819870, 2911578809929672737,281916836769424155940, 34249052273023310929439] |