n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 31 |
4 | 145 |
5 | 1641 |
6 | 17731 |
7 | 194503 |
8 | 2676801 |
9 | 40644145 |
10 | 667689571 |
11 | 11514903951 |
12 | 227665389073 |
13 | 4578990563161 |
14 | 100913115588195 |
15 | 2372334731747191 |
16 | 57930324367791361 |
17 | 1509398686720812513 |
18 | 41341036374519788611 |
19 | 1184009909077133031295 |
[1,1,3,31,145,1641,17731,194503,2676801,40644145, 667689571,11514903951,227665389073,4578990563161, 100913115588195,2372334731747191, 57930324367791361,1509398686720812513, 41341036374519788611,1184009909077133031295] |