n | a(n) |
---|---|
1 | 1 |
2 | 7 |
3 | 39 |
4 | 145 |
5 | 797 |
6 | 3569 |
7 | 17175 |
8 | 81389 |
9 | 385231 |
10 | 1829101 |
11 | 8668831 |
12 | 41113007 |
13 | 194955001 |
14 | 924449179 |
15 | 4383753391 |
16 | 20787435021 |
17 | 98573175383 |
18 | 467429309303 |
19 | 2216527199343 |
20 | 10510668481659 |
21 | 49841089379745 |
22 | 236344089239897 |
[1,7,39,145,797,3569,17175,81389,385231,1829101, 8668831,41113007,194955001,924449179,4383753391, 20787435021,98573175383,467429309303, 2216527199343,10510668481659,49841089379745, 236344089239897] |