n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 30 |
3 | 205 |
4 | 1555 |
5 | 12880 |
6 | 115155 |
7 | 1101705 |
8 | 11202680 |
9 | 120415755 |
10 | 1362057155 |
11 | 16151603830 |
12 | 200144023805 |
13 | 2584429030505 |
14 | 34691478901030 |
15 | 483040313859705 |
16 | 6963313750468055 |
17 | 103747357497925880 |
18 | 1595132080103893655 |
[1,5,30,205,1555,12880,115155,1101705,11202680, 120415755,1362057155,16151603830,200144023805, 2584429030505,34691478901030,483040313859705, 6963313750468055,103747357497925880, 1595132080103893655] |