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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 6 |
| 3 | 7 |
| 4 | 24 |
| 5 | 15 |
| 6 | 120 |
| 7 | 255 |
| 8 | 96 |
| 9 | 831 |
| 10 | 960 |
| 11 | 4095 |
| 12 | 7680 |
| 13 | 13311 |
| 14 | 14720 |
| 15 | 57343 |
| 16 | 122368 |
| 17 | 127999 |
| 18 | 474112 |
| 19 | 106495 |
| 20 | 1892352 |
| 21 | 933887 |
| 22 | 6533120 |
| 23 | 3735551 |
| 24 | 29278208 |
| 25 | 25427967 |
| 26 | 83869696 |
| 27 | 130547711 |
| 28 | 528416768 |
| 29 | 25165823 |
| 30 | 2098823168 |
| 31 | 4261412863 |
| 32 | 1743650816 |
| 33 | 17043816447 |
[1,3,6,7,24,15,120,255,96,831,960,4095,7680,13311, 14720,57343,122368,127999,474112,106495,1892352, 933887,6533120,3735551,29278208,25427967,83869696, 130547711,528416768,25165823,2098823168, 4261412863,1743650816,17043816447] |