n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 30 |
3 | 205 |
4 | 1530 |
5 | 12130 |
6 | 100380 |
7 | 857405 |
8 | 7503330 |
9 | 66931030 |
10 | 606337380 |
11 | 5563370130 |
12 | 51594699780 |
13 | 482860844580 |
14 | 4554484964280 |
15 | 43252833007005 |
16 | 413224841606130 |
17 | 3968768817574030 |
18 | 38297678538914580 |
19 | 371128975862945030 |
[1,5,30,205,1530,12130,100380,857405,7503330, 66931030,606337380,5563370130,51594699780, 482860844580,4554484964280,43252833007005, 413224841606130,3968768817574030, 38297678538914580,371128975862945030] |