n | a(n) |
---|---|
0 | 1 |
1 | 10 |
2 | 70 |
3 | 430 |
4 | 2990 |
5 | 21210 |
6 | 152752 |
7 | 1107368 |
8 | 8054662 |
9 | 58680898 |
10 | 427841510 |
11 | 3120550894 |
12 | 22764484280 |
13 | 166081792328 |
14 | 1211725839660 |
15 | 8840879076060 |
16 | 64504607657222 |
17 | 470639150157006 |
18 | 3433889688841786 |
19 | 25054462942728214 |
[1,10,70,430,2990,21210,152752,1107368,8054662, 58680898,427841510,3120550894,22764484280, 166081792328,1211725839660,8840879076060, 64504607657222,470639150157006,3433889688841786, 25054462942728214] |