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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 6 |
| 3 | 3 |
| 4 | 28 |
| 5 | 7 |
| 6 | 120 |
| 7 | 15 |
| 8 | 496 |
| 9 | 31 |
| 10 | 2016 |
| 11 | 1855 |
| 12 | 7616 |
| 13 | 1663 |
| 14 | 32640 |
| 15 | 8447 |
| 16 | 114432 |
| 17 | 35327 |
| 18 | 458240 |
| 19 | 488447 |
| 20 | 2046976 |
| 21 | 641023 |
| 22 | 7141376 |
| 23 | 4182015 |
| 24 | 25423872 |
| 25 | 16752639 |
| 26 | 129753088 |
| 27 | 66994175 |
| 28 | 407879680 |
| 29 | 267550719 |
| 30 | 1742700544 |
| 31 | 2120548351 |
| 32 | 8522760192 |
| 33 | 1240596479 |
[1,1,6,3,28,7,120,15,496,31,2016,1855,7616,1663, 32640,8447,114432,35327,458240,488447,2046976, 641023,7141376,4182015,25423872,16752639, 129753088,66994175,407879680,267550719,1742700544, 2120548351,8522760192,1240596479] |