n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 4 |
5 | 11 |
6 | 42 |
7 | 196 |
8 | 988 |
9 | 5314 |
10 | 30724 |
11 | 189962 |
12 | 1244264 |
13 | 8583042 |
14 | 62112639 |
15 | 469917193 |
16 | 3707053139 |
17 | 30421506639 |
18 | 259182853643 |
19 | 2288352779166 |
20 | 20904648990227 |
21 | 197305045507448 |
22 | 1921509079008868 |
23 | 19285642292478101 |
[1,1,1,4,11,42,196,988,5314,30724,189962,1244264, 8583042,62112639,469917193,3707053139,30421506639, 259182853643,2288352779166,20904648990227, 197305045507448,1921509079008868, 19285642292478101] |