n | a(n) |
---|---|
0 | 20 |
1 | 21 |
2 | 209 |
3 | 439 |
4 | 4160 |
5 | 4599 |
6 | 188120 |
7 | 192719 |
8 | 1922591 |
9 | 4037901 |
10 | 38263700 |
11 | 42301601 |
12 | 1730327740 |
13 | 1772629341 |
14 | 17683991809 |
15 | 37140612959 |
16 | 351949508440 |
17 | 389090121399 |
18 | 15915554364400 |
19 | 16304644485799 |
20 | 162657354736591 |
21 | 341619353958981 |
22 | 3237231540367420 |
[20,21,209,439,4160,4599,188120,192719,1922591, 4037901,38263700,42301601,1730327740,1772629341, 17683991809,37140612959,351949508440,389090121399, 15915554364400,16304644485799,162657354736591, 341619353958981,3237231540367420] |