| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 0 |
| 3 | 14 |
| 4 | 1 |
| 5 | 62 |
| 6 | 0 |
| 7 | 255 |
| 8 | 0 |
| 9 | 1022 |
| 10 | 0 |
| 11 | 4094 |
| 12 | 1 |
| 13 | 16382 |
| 14 | 0 |
| 15 | 65526 |
| 16 | 9 |
| 17 | 262134 |
| 18 | 8 |
| 19 | 1048566 |
| 20 | 9 |
| 21 | 4194278 |
| 22 | 16 |
| 23 | 16777190 |
| 24 | 25 |
| 25 | 67108838 |
| 26 | 24 |
| 27 | 268435424 |
| 28 | 31 |
| 29 | 1073741696 |
| 30 | 79 |
| 31 | 4294967216 |
| 32 | 72 |
| 33 | 17179869108 |
| 34 | 8 |
| 35 | 68719476615 |
| 36 | 112 |
| 37 | 274877906447 |
| 38 | 432 |
| 39 | 1099511627343 |
| 40 | 432 |
[1,2,0,14,1,62,0,255,0,1022,0,4094,1,16382,0, 65526,9,262134,8,1048566,9,4194278,16,16777190,25, 67108838,24,268435424,31,1073741696,79,4294967216, 72,17179869108,8,68719476615,112,274877906447,432, 1099511627343,432] |