n | a(n) |
---|---|
0 | 1 |
1 | 9 |
2 | 57 |
3 | 321 |
4 | 1713 |
5 | 8889 |
6 | 45417 |
7 | 230001 |
8 | 1158753 |
9 | 5820009 |
10 | 29178777 |
11 | 146130081 |
12 | 731358993 |
13 | 3658920729 |
14 | 18300980937 |
15 | 91524036561 |
16 | 457677578433 |
17 | 2288560079049 |
18 | 11443316955897 |
19 | 57218134461441 |
20 | 286095321353073 |
21 | 1430490553902969 |
22 | 7152494610927657 |
23 | 35762598578876721 |
[1,9,57,321,1713,8889,45417,230001,1158753, 5820009,29178777,146130081,731358993,3658920729, 18300980937,91524036561,457677578433, 2288560079049,11443316955897,57218134461441, 286095321353073,1430490553902969,7152494610927657, 35762598578876721] |