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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 7 |
| 3 | 0 |
| 4 | 31 |
| 5 | 0 |
| 6 | 127 |
| 7 | 0 |
| 8 | 511 |
| 9 | 0 |
| 10 | 2047 |
| 11 | 0 |
| 12 | 8191 |
| 13 | 0 |
| 14 | 31999 |
| 15 | 0 |
| 16 | 114943 |
| 17 | 15360 |
| 18 | 445695 |
| 19 | 61440 |
| 20 | 1573119 |
| 21 | 523264 |
| 22 | 7868415 |
| 23 | 1044480 |
| 24 | 29364223 |
| 25 | 8187904 |
| 26 | 117444607 |
| 27 | 32763904 |
| 28 | 402657279 |
| 29 | 350220288 |
| 30 | 3327 |
| 31 | 3684691968 |
| 32 | 12543 |
| 33 | 14700973056 |
| 34 | 50593023 |
| 35 | 59054751744 |
| 36 | 1044735 |
[1,0,7,0,31,0,127,0,511,0,2047,0,8191,0,31999,0, 114943,15360,445695,61440,1573119,523264,7868415, 1044480,29364223,8187904,117444607,32763904, 402657279,350220288,3327,3684691968,12543, 14700973056,50593023,59054751744,1044735] |