n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 18 |
4 | 99 |
5 | 724 |
6 | 4820 |
7 | 33381 |
8 | 227862 |
9 | 1564198 |
10 | 10714823 |
11 | 73457064 |
12 | 503438760 |
13 | 3450734281 |
14 | 23651386922 |
15 | 162109796922 |
16 | 1111115037483 |
17 | 7615701104764 |
18 | 52198777931900 |
19 | 357775783071021 |
20 | 2452231602371646 |
21 | 16807845698458702 |
[1,2,18,99,724,4820,33381,227862,1564198,10714823, 73457064,503438760,3450734281,23651386922, 162109796922,1111115037483,7615701104764, 52198777931900,357775783071021,2452231602371646, 16807845698458702] |