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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 2 |
| 3 | 12 |
| 4 | 5 |
| 5 | 56 |
| 6 | 11 |
| 7 | 242 |
| 8 | 20 |
| 9 | 997 |
| 10 | 40 |
| 11 | 4047 |
| 12 | 88 |
| 13 | 16271 |
| 14 | 176 |
| 15 | 65343 |
| 16 | 332 |
| 17 | 261725 |
| 18 | 640 |
| 19 | 1047807 |
| 20 | 1408 |
| 21 | 4192447 |
| 22 | 3040 |
| 23 | 16773695 |
| 24 | 5344 |
| 25 | 67102143 |
| 26 | 10464 |
| 27 | 268423039 |
| 28 | 22880 |
| 29 | 1073712719 |
| 30 | 45944 |
| 31 | 4294916687 |
| 32 | 82776 |
| 33 | 17179761327 |
| 34 | 170656 |
| 35 | 68719271951 |
| 36 | 372724 |
[1,2,2,12,5,56,11,242,20,997,40,4047,88,16271,176, 65343,332,261725,640,1047807,1408,4192447,3040, 16773695,5344,67102143,10464,268423039,22880, 1073712719,45944,4294916687,82776,17179761327, 170656,68719271951,372724] |