n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 3 |
5 | 10 |
6 | 33 |
7 | 134 |
8 | 947 |
9 | 8780 |
10 | 97821 |
11 | 1375312 |
12 | 27712816 |
13 | 754977953 |
14 | 26645291289 |
15 | 1208294585650 |
16 | 74271003442168 |
17 | 6124346294290730 |
18 | 668846422203976047 |
19 | 95426817845827533968 |
20 | 18141398847837127162392 |
[1,1,1,3,10,33,134,947,8780,97821,1375312, 27712816,754977953,26645291289,1208294585650, 74271003442168,6124346294290730, 668846422203976047,95426817845827533968, 18141398847837127162392] |