n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 5 |
4 | 21 |
5 | 129 |
6 | 1099 |
7 | 11647 |
8 | 148292 |
9 | 2190302 |
10 | 36842892 |
11 | 694276152 |
12 | 14488348603 |
13 | 331537914373 |
14 | 8254117606799 |
15 | 222087256536602 |
16 | 6421589319659283 |
17 | 198565371839434761 |
18 | 6538245667687424041 |
19 | 228396692050813678534 |
20 | 8436237099236470594589 |
[1,2,5,21,129,1099,11647,148292,2190302,36842892, 694276152,14488348603,331537914373,8254117606799, 222087256536602,6421589319659283, 198565371839434761,6538245667687424041, 228396692050813678534,8436237099236470594589] |