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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 1 |
| 3 | 14 |
| 4 | 1 |
| 5 | 62 |
| 6 | 1 |
| 7 | 254 |
| 8 | 1 |
| 9 | 1022 |
| 10 | 1 |
| 11 | 4094 |
| 12 | 1 |
| 13 | 16382 |
| 14 | 1 |
| 15 | 65534 |
| 16 | 1 |
| 17 | 262142 |
| 18 | 1 |
| 19 | 1048574 |
| 20 | 1 |
| 21 | 4194302 |
| 22 | 1 |
| 23 | 16777214 |
| 24 | 1 |
| 25 | 67108862 |
| 26 | 1 |
| 27 | 268435454 |
| 28 | 1 |
| 29 | 1073741822 |
| 30 | 1 |
| 31 | 4294967294 |
| 32 | 1 |
| 33 | 17179869182 |
| 34 | 1 |
| 35 | 68719476734 |
| 36 | 1 |
| 37 | 274877906942 |
| 38 | 1 |
| 39 | 1099511627774 |
| 40 | 1 |
| 41 | 4398046511102 |
| 42 | 1 |
[1,2,1,14,1,62,1,254,1,1022,1,4094,1,16382,1, 65534,1,262142,1,1048574,1,4194302,1,16777214,1, 67108862,1,268435454,1,1073741822,1,4294967294,1, 17179869182,1,68719476734,1,274877906942,1, 1099511627774,1,4398046511102,1] |