n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 20 |
4 | 186 |
5 | 2229 |
6 | 32790 |
7 | 572018 |
8 | 11541600 |
9 | 264370473 |
10 | 6776462320 |
11 | 192163455384 |
12 | 5972728750560 |
13 | 201906797867085 |
14 | 7375152706023648 |
15 | 289473254317393110 |
16 | 12149690892777901568 |
17 | 543010240381452000273 |
18 | 25746662043469525754880 |
19 | 1290829803802550504743036 |
[1,1,3,20,186,2229,32790,572018,11541600, 264370473,6776462320,192163455384,5972728750560, 201906797867085,7375152706023648, 289473254317393110,12149690892777901568, 543010240381452000273,25746662043469525754880, 1290829803802550504743036] |