n | a(n) |
---|---|
2 | 1 |
3 | 7 |
4 | 39 |
5 | 201 |
6 | 1000 |
7 | 4885 |
8 | 23621 |
9 | 113543 |
10 | 543895 |
11 | 2600204 |
12 | 12417829 |
13 | 59278440 |
14 | 282969385 |
15 | 1351124510 |
16 | 6454283276 |
17 | 30849969965 |
18 | 147555219782 |
19 | 706274470775 |
20 | 3383203356648 |
21 | 16219148141581 |
22 | 77817618006364 |
23 | 373661751926702 |
[1,7,39,201,1000,4885,23621,113543,543895,2600204, 12417829,59278440,282969385,1351124510,6454283276, 30849969965,147555219782,706274470775, 3383203356648,16219148141581,77817618006364, 373661751926702] |