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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 11 |
| 6 | 13 |
| 7 | 19 |
| 8 | 1 |
| 9 | 247 |
| 10 | 251 |
| 11 | 1013 |
| 12 | 509 |
| 13 | 1361 |
| 14 | 1363 |
| 15 | 16369 |
| 16 | 2047 |
| 17 | 65519 |
| 18 | 851 |
| 19 | 233 |
| 20 | 14563 |
| 21 | 209711 |
| 22 | 29959 |
| 23 | 46091 |
| 24 | 1048573 |
| 25 | 5592397 |
| 26 | 5592401 |
| 27 | 67108837 |
| 28 | 1342177 |
| 29 | 20648879 |
| 30 | 268435441 |
| 31 | 357913931 |
| 32 | 22369621 |
| 33 | 4294967263 |
| 34 | 4294967279 |
[0,0,1,1,11,13,19,1,247,251,1013,509,1361,1363, 16369,2047,65519,851,233,14563,209711,29959,46091, 1048573,5592397,5592401,67108837,1342177,20648879, 268435441,357913931,22369621,4294967263, 4294967279] |