n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 10 |
4 | 45 |
5 | 351 |
6 | 1540 |
7 | 11935 |
8 | 52326 |
9 | 405450 |
10 | 1777555 |
11 | 13773376 |
12 | 60384555 |
13 | 467889345 |
14 | 2051297326 |
15 | 15894464365 |
16 | 69683724540 |
17 | 539943899076 |
18 | 2367195337045 |
19 | 18342198104230 |
20 | 80414957735001 |
21 | 623094791644755 |
22 | 2731741367653000 |
23 | 21166880717817451 |
24 | 92798791542467010 |
[0,1,10,45,351,1540,11935,52326,405450,1777555, 13773376,60384555,467889345,2051297326, 15894464365,69683724540,539943899076, 2367195337045,18342198104230,80414957735001, 623094791644755,2731741367653000, 21166880717817451,92798791542467010] |