n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 14 |
6 | 52 |
7 | 238 |
8 | 1288 |
9 | 8144 |
10 | 59150 |
11 | 486080 |
12 | 4464304 |
13 | 45352840 |
14 | 505200280 |
15 | 6124903616 |
16 | 80304039608 |
17 | 1132339758992 |
18 | 17089219746352 |
19 | 274872988654576 |
20 | 4694355262548640 |
21 | 84840179120802560 |
22 | 1617735736056994736 |
23 | 32457990536915964800 |
24 | 683569125395013719680 |
[1,1,1,2,5,14,52,238,1288,8144,59150,486080, 4464304,45352840,505200280,6124903616,80304039608, 1132339758992,17089219746352,274872988654576, 4694355262548640,84840179120802560, 1617735736056994736,32457990536915964800, 683569125395013719680] |