n | a(n) |
---|---|
0 | 1 |
1 | 10 |
2 | 70 |
3 | 448 |
4 | 2786 |
5 | 17140 |
6 | 104938 |
7 | 640720 |
8 | 3904738 |
9 | 23762140 |
10 | 144429770 |
11 | 876959896 |
12 | 5319995474 |
13 | 32247562084 |
14 | 195332428970 |
15 | 1182430057888 |
16 | 7153644523970 |
17 | 43256701913260 |
18 | 261441118446154 |
19 | 1579452451096168 |
20 | 9538212470700466 |
21 | 57579647214814900 |
22 | 347476026056519210 |
[1,10,70,448,2786,17140,104938,640720,3904738, 23762140,144429770,876959896,5319995474, 32247562084,195332428970,1182430057888, 7153644523970,43256701913260,261441118446154, 1579452451096168,9538212470700466, 57579647214814900,347476026056519210] |