n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 6 |
6 | 24 |
7 | 102 |
8 | 528 |
9 | 2952 |
10 | 19008 |
11 | 131112 |
12 | 1009728 |
13 | 8271792 |
14 | 74167488 |
15 | 703077552 |
16 | 7194754368 |
17 | 77437418112 |
18 | 890643066048 |
19 | 10726837356672 |
20 | 136988469649728 |
21 | 1825110309733632 |
22 | 25625477737660608 |
23 | 374159217291201792 |
24 | 5728724202727533888 |
25 | 90961591766739121152 |
26 | 1508303564683904357568 |
27 | 25874345243221479539712 |
28 | 461932949559928514787648 |
29 | 8513674175717969079785472 |
30 | 162818666826944872460200128 |
[1,0,1,1,2,6,24,102,528,2952,19008,131112,1009728, 8271792,74167488,703077552,7194754368,77437418112, 890643066048,10726837356672,136988469649728, 1825110309733632,25625477737660608, 374159217291201792,5728724202727533888, 90961591766739121152,1508303564683904357568, 25874345243221479539712,461932949559928514787648, 8513674175717969079785472, 162818666826944872460200128] |