n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 3 |
3 | 6 |
4 | 16 |
5 | 52 |
6 | 189 |
7 | 740 |
8 | 3067 |
9 | 13330 |
10 | 60366 |
11 | 283504 |
12 | 1376000 |
13 | 6884364 |
14 | 35440060 |
15 | 187471028 |
16 | 1018049493 |
17 | 5671511886 |
18 | 32396788157 |
19 | 189673021414 |
20 | 1137795705447 |
21 | 6991058047594 |
22 | 43984892028735 |
23 | 283267507353084 |
24 | 1866622184589906 |
[1,2,3,6,16,52,189,740,3067,13330,60366,283504, 1376000,6884364,35440060,187471028,1018049493, 5671511886,32396788157,189673021414,1137795705447, 6991058047594,43984892028735,283267507353084, 1866622184589906] |