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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 1 |
| 3 | 12 |
| 4 | 3 |
| 5 | 56 |
| 6 | 7 |
| 7 | 240 |
| 8 | 9 |
| 9 | 996 |
| 10 | 19 |
| 11 | 4044 |
| 12 | 35 |
| 13 | 16256 |
| 14 | 73 |
| 15 | 65312 |
| 16 | 135 |
| 17 | 261752 |
| 18 | 261 |
| 19 | 1047656 |
| 20 | 531 |
| 21 | 4192684 |
| 22 | 1025 |
| 23 | 16773748 |
| 24 | 2059 |
| 25 | 67101492 |
| 26 | 4161 |
| 27 | 268421784 |
| 28 | 9537 |
| 29 | 1073713692 |
| 30 | 17827 |
| 31 | 4294906432 |
| 32 | 34087 |
| 33 | 17179754624 |
| 34 | 69421 |
| 35 | 68719259666 |
| 36 | 133505 |
| 37 | 274877403768 |
[1,2,1,12,3,56,7,240,9,996,19,4044,35,16256,73, 65312,135,261752,261,1047656,531,4192684,1025, 16773748,2059,67101492,4161,268421784,9537, 1073713692,17827,4294906432,34087,17179754624, 69421,68719259666,133505,274877403768] |