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| n | a(n) |
|---|---|
| 2 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 1 |
| 6 | 9 |
| 7 | 1 |
| 8 | 15 |
| 9 | 7 |
| 10 | 33 |
| 11 | 1 |
| 12 | 99 |
| 13 | 1 |
| 14 | 129 |
| 15 | 37 |
| 16 | 255 |
| 17 | 1 |
| 18 | 999 |
| 19 | 1 |
| 20 | 1155 |
| 21 | 133 |
| 22 | 2049 |
| 23 | 1 |
| 24 | 9999 |
| 25 | 31 |
| 26 | 8193 |
| 27 | 511 |
| 28 | 16899 |
| 29 | 1 |
| 30 | 146853 |
| 31 | 1 |
| 32 | 65535 |
| 33 | 2053 |
| 34 | 131073 |
| 35 | 157 |
| 36 | 999999 |
| 37 | 1 |
| 38 | 524289 |
| 39 | 8197 |
| 40 | 1336335 |
| 41 | 1 |
| 42 | 11680389 |
| 43 | 1 |
| 44 | 4202499 |
| 45 | 54871 |
| 46 | 8388609 |
| 47 | 1 |
| 48 | 99999999 |
| 49 | 127 |
| 50 | 45435423 |
| 51 | 131077 |
[1,1,3,1,9,1,15,7,33,1,99,1,129,37,255,1,999,1, 1155,133,2049,1,9999,31,8193,511,16899,1,146853,1, 65535,2053,131073,157,999999,1,524289,8197, 1336335,1,11680389,1,4202499,54871,8388609,1, 99999999,127,45435423,131077] |