n | a(n) |
---|---|
1 | 0 |
2 | 5 |
3 | 14 |
4 | 73 |
5 | 387 |
6 | 2000 |
7 | 10487 |
8 | 54957 |
9 | 287218 |
10 | 1503959 |
11 | 7869877 |
12 | 41184270 |
13 | 215540219 |
14 | 1127976673 |
15 | 5903110936 |
16 | 30893060733 |
17 | 161673863609 |
18 | 846095754528 |
19 | 4427911443157 |
20 | 23172791974003 |
21 | 121271244926878 |
22 | 634654381325531 |
[0,5,14,73,387,2000,10487,54957,287218,1503959, 7869877,41184270,215540219,1127976673,5903110936, 30893060733,161673863609,846095754528, 4427911443157,23172791974003,121271244926878, 634654381325531] |