n | a(n) |
---|---|
1 | 0 |
2 | 20 |
3 | 228 |
4 | 2348 |
5 | 22400 |
6 | 207424 |
7 | 1946752 |
8 | 18265856 |
9 | 171168256 |
10 | 1602206720 |
11 | 14987712512 |
12 | 140201013248 |
13 | 1311499247616 |
14 | 12268128616448 |
15 | 114758535184384 |
16 | 1073466206519296 |
17 | 10041325376634880 |
18 | 93927687502692352 |
19 | 878609985428783104 |
[0,20,228,2348,22400,207424,1946752,18265856, 171168256,1602206720,14987712512,140201013248, 1311499247616,12268128616448,114758535184384, 1073466206519296,10041325376634880, 93927687502692352,878609985428783104] |