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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 2 |
| 4 | 7 |
| 5 | 8 |
| 6 | 24 |
| 7 | 28 |
| 8 | 93 |
| 9 | 111 |
| 10 | 362 |
| 11 | 436 |
| 12 | 1452 |
| 13 | 1763 |
| 14 | 5880 |
| 15 | 7176 |
| 16 | 24089 |
| 17 | 29521 |
| 18 | 99386 |
| 19 | 122182 |
| 20 | 412637 |
| 21 | 508595 |
| 22 | 1721500 |
| 23 | 2126312 |
| 24 | 7211536 |
| 25 | 8923136 |
| 26 | 30312960 |
| 27 | 37563930 |
| 28 | 127790379 |
| 29 | 158563368 |
| 30 | 540082784 |
| 31 | 670893296 |
| 32 | 2287577537 |
[1,1,2,2,7,8,24,28,93,111,362,436,1452,1763,5880, 7176,24089,29521,99386,122182,412637,508595, 1721500,2126312,7211536,8923136,30312960,37563930, 127790379,158563368,540082784,670893296, 2287577537] |