n | a(n) |
---|---|
0 | 1 |
1 | 30 |
2 | 540 |
3 | 7560 |
4 | 90720 |
5 | 979776 |
6 | 9797760 |
7 | 92378880 |
8 | 831409920 |
9 | 7205552640 |
10 | 60526642176 |
11 | 495217981440 |
12 | 3961743851520 |
13 | 31084451758080 |
14 | 239794342133760 |
15 | 1822437000216576 |
16 | 13668277501624320 |
17 | 101306056776744960 |
18 | 742911083029463040 |
19 | 5395880497792942080 |
[1,30,540,7560,90720,979776,9797760,92378880, 831409920,7205552640,60526642176,495217981440, 3961743851520,31084451758080,239794342133760, 1822437000216576,13668277501624320, 101306056776744960,742911083029463040, 5395880497792942080] |