n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 9 |
4 | 21 |
5 | 27 |
6 | 73 |
7 | 99 |
8 | 111 |
9 | 271 |
10 | 693 |
11 | 707 |
12 | 777 |
13 | 819 |
14 | 909 |
15 | 999 |
16 | 2151 |
17 | 2629 |
18 | 3441 |
19 | 3813 |
20 | 4551 |
21 | 6987 |
22 | 7227 |
23 | 7373 |
24 | 9999 |
25 | 18981 |
26 | 19019 |
27 | 20007 |
28 | 20979 |
29 | 23199 |
30 | 24453 |
31 | 25641 |
32 | 27027 |
33 | 27417 |
34 | 30303 |
35 | 81819 |
36 | 82113 |
37 | 83883 |
38 | 99999 |
39 | 125523 |
40 | 172013 |
41 | 194841 |
42 | 201917 |
43 | 238139 |
[1,3,9,21,27,73,99,111,271,693,707,777,819,909, 999,2151,2629,3441,3813,4551,6987,7227,7373,9999, 18981,19019,20007,20979,23199,24453,25641,27027, 27417,30303,81819,82113,83883,99999,125523,172013, 194841,201917,238139] |