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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 12 |
| 4 | 1 |
| 5 | 60 |
| 6 | 1 |
| 7 | 252 |
| 8 | 9 |
| 9 | 992 |
| 10 | 15 |
| 11 | 4064 |
| 12 | 15 |
| 13 | 16356 |
| 14 | 1 |
| 15 | 65532 |
| 16 | 201 |
| 17 | 261632 |
| 18 | 255 |
| 19 | 1048140 |
| 20 | 1 |
| 21 | 4194300 |
| 22 | 857 |
| 23 | 16775296 |
| 24 | 703 |
| 25 | 67107280 |
| 26 | 167 |
| 27 | 268435104 |
| 28 | 7631 |
| 29 | 1073726084 |
| 30 | 6449 |
| 31 | 4294950916 |
| 32 | 8181 |
| 33 | 17179856200 |
| 34 | 3 |
| 35 | 68719476728 |
| 36 | 3443 |
| 37 | 274877899424 |
| 38 | 3023 |
[1,0,1,12,1,60,1,252,9,992,15,4064,15,16356,1, 65532,201,261632,255,1048140,1,4194300,857, 16775296,703,67107280,167,268435104,7631, 1073726084,6449,4294950916,8181,17179856200,3, 68719476728,3443,274877899424,3023] |