Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 9 |
4 | 111 |
5 | 333 |
6 | 999 |
7 | 12321 |
8 | 36963 |
9 | 1001001 |
10 | 3003003 |
11 | 9009009 |
12 | 111111111 |
13 | 333333333 |
14 | 999999999 |
15 | 12333333321 |
16 | 36999999963 |
17 | 1002003002001 |
18 | 3006009006003 |
19 | 111222333222111 |
20 | 333666999666333 |
21 | 12345678987654321 |
[1,3,9,111,333,999,12321,36963,1001001,3003003, 9009009,111111111,333333333,999999999,12333333321, 36999999963,1002003002001,3006009006003, 111222333222111,333666999666333,12345678987654321] |