The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 1001 |
| 4 | 11001 |
| 5 | 110001 |
| 6 | 1010001 |
| 7 | 11100001 |
| 8 | 100100001 |
| 9 | 110111001 |
| 10 | 1011011001 |
| 11 | 1111000001 |
| 12 | 10001000001 |
| 13 | 11111101001 |
| 14 | 101000101001 |
| 15 | 111110000001 |
| 16 | 1000010000001 |
| 17 | 1010011010001 |
| 18 | 1110000111001 |
| 19 | 10000111001001 |
| 20 | 10011001001001 |
| 21 | 10110010111001 |
| 22 | 11011101010001 |
| 23 | 11111100000001 |
| 24 | 100000100000001 |
| 25 | 101101101110001 |
| 26 | 110101001011001 |
| 27 | 1000101110001001 |
| 28 | 1001010010001001 |
| 29 | 1011101101011001 |
| 30 | 1101000001110001 |
| 31 | 1111111000000001 |
| 32 | 10000001000000001 |
| 33 | 10010001100100001 |
[0,1,1001,11001,110001,1010001,11100001,100100001, 110111001,1011011001,1111000001,10001000001, 11111101001,101000101001,111110000001, 1000010000001,1010011010001,1110000111001, 10000111001001,10011001001001,10110010111001, 11011101010001,11111100000001,100000100000001, 101101101110001,110101001011001,1000101110001001, 1001010010001001,1011101101011001, 1101000001110001,1111111000000001, 10000001000000001,10010001100100001] |