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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 7 |
| 4 | 9 |
| 5 | 16 |
| 6 | 17 |
| 7 | 31 |
| 8 | 32 |
| 9 | 127 |
| 10 | 128 |
| 11 | 256 |
| 12 | 257 |
| 13 | 8191 |
| 14 | 8192 |
| 15 | 65536 |
| 16 | 65537 |
| 17 | 131071 |
| 18 | 131072 |
| 19 | 524287 |
| 20 | 524288 |
| 21 | 2147483647 |
| 22 | 2147483648 |
| 23 | 2305843009213693951 |
| 24 | 2305843009213693952 |
| 25 | 618970019642690137449562111 |
[1,5,7,9,16,17,31,32,127,128,256,257,8191,8192, 65536,65537,131071,131072,524287,524288, 2147483647,2147483648,2305843009213693951, 2305843009213693952,618970019642690137449562111] |