n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 10 |
4 | 70 |
5 | 431 |
6 | 2534 |
7 | 14820 |
8 | 88267 |
9 | 542912 |
10 | 3475978 |
11 | 23253693 |
12 | 162723444 |
13 | 1190464900 |
14 | 9092400633 |
15 | 72370378750 |
16 | 599168889634 |
17 | 5150536258735 |
18 | 45891028609826 |
19 | 423144495659912 |
20 | 4031842435506171 |
21 | 39645279656283820 |
22 | 401806832058661334 |
23 | 4192631368792015237 |
24 | 44992655908959220440 |
[0,0,1,10,70,431,2534,14820,88267,542912,3475978, 23253693,162723444,1190464900,9092400633, 72370378750,599168889634,5150536258735, 45891028609826,423144495659912,4031842435506171, 39645279656283820,401806832058661334, 4192631368792015237,44992655908959220440] |