n | a(n) |
---|---|
0 | 1 |
1 | 10 |
2 | 60 |
3 | 340 |
4 | 1920 |
5 | 10900 |
6 | 62280 |
7 | 358060 |
8 | 2070240 |
9 | 12030820 |
10 | 70231800 |
11 | 411625180 |
12 | 2420922960 |
13 | 14281397140 |
14 | 84467679720 |
15 | 500702562700 |
16 | 2973697798080 |
17 | 17689598897860 |
18 | 105374653934040 |
19 | 628433226338620 |
[1,10,60,340,1920,10900,62280,358060,2070240, 12030820,70231800,411625180,2420922960, 14281397140,84467679720,500702562700, 2973697798080,17689598897860,105374653934040, 628433226338620] |