n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 30 |
3 | 468 |
4 | 7560 |
5 | 121824 |
6 | 1963440 |
7 | 31644432 |
8 | 510008400 |
9 | 8219725776 |
10 | 132476037840 |
11 | 2135095631568 |
12 | 34411003154640 |
13 | 554596768687824 |
14 | 8938349587100880 |
15 | 144057985642894032 |
16 | 2321760077211226320 |
17 | 37419444899740487376 |
18 | 603083354885909384400 |
19 | 9719800331483969538768 |
[1,1,30,468,7560,121824,1963440,31644432, 510008400,8219725776,132476037840,2135095631568, 34411003154640,554596768687824,8938349587100880, 144057985642894032,2321760077211226320, 37419444899740487376,603083354885909384400, 9719800331483969538768] |