The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 11 |
| 2 | 101 |
| 3 | 10111 |
| 4 | 101111 |
| 5 | 1011001 |
| 6 | 1100101 |
| 7 | 10010101 |
| 8 | 10011101 |
| 9 | 10100011 |
| 10 | 10101101 |
| 11 | 10110011 |
| 12 | 11000111 |
| 13 | 11100101 |
| 14 | 100111001 |
| 15 | 101001011 |
| 16 | 101101111 |
| 17 | 101111011 |
| 18 | 101111111 |
| 19 | 110111011 |
| 20 | 111001001 |
| 21 | 1000001011 |
| 22 | 1001001011 |
| 23 | 1001110111 |
| 24 | 1010000011 |
| 25 | 1010000111 |
| 26 | 1010001101 |
[11,101,10111,101111,1011001,1100101,10010101, 10011101,10100011,10101101,10110011,11000111, 11100101,100111001,101001011,101101111,101111011, 101111111,110111011,111001001,1000001011, 1001001011,1001110111,1010000011,1010000111, 1010001101] |