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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 28 |
| 5 | 31 |
| 6 | 32 |
| 7 | 63 |
| 8 | 480 |
| 9 | 127 |
| 10 | 1920 |
| 11 | 2047 |
| 12 | 2304 |
| 13 | 3583 |
| 14 | 31232 |
| 15 | 22527 |
| 16 | 2560 |
| 17 | 255999 |
| 18 | 30720 |
| 19 | 1023999 |
| 20 | 126976 |
| 21 | 4128767 |
| 22 | 851968 |
| 23 | 16383999 |
| 24 | 16711680 |
| 25 | 17039359 |
| 26 | 33488896 |
| 27 | 252182527 |
| 28 | 54001664 |
| 29 | 1073610751 |
| 30 | 947519488 |
| 31 | 1607729151 |
| 32 | 549322752 |
| 33 | 15675686911 |
[1,1,2,3,28,31,32,63,480,127,1920,2047,2304,3583, 31232,22527,2560,255999,30720,1023999,126976, 4128767,851968,16383999,16711680,17039359, 33488896,252182527,54001664,1073610751,947519488, 1607729151,549322752,15675686911] |