n | a(n) |
---|---|
1 | 1 |
2 | 40 |
3 | 85 |
4 | 580 |
5 | 2928 |
6 | 17440 |
7 | 101040 |
8 | 609660 |
9 | 3706880 |
10 | 22887192 |
11 | 142567200 |
12 | 895855380 |
13 | 5667708960 |
14 | 36072949560 |
15 | 230763023408 |
16 | 1482822818820 |
17 | 9565561745040 |
18 | 61920953016320 |
19 | 402074969960400 |
20 | 2618069854211784 |
21 | 17090016552803440 |
22 | 111812320834030800 |
[1,40,85,580,2928,17440,101040,609660,3706880, 22887192,142567200,895855380,5667708960, 36072949560,230763023408,1482822818820, 9565561745040,61920953016320,402074969960400, 2618069854211784,17090016552803440, 111812320834030800] |