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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 4 |
| 3 | 3 |
| 4 | 16 |
| 5 | 23 |
| 6 | 96 |
| 7 | 47 |
| 8 | 320 |
| 9 | 351 |
| 10 | 1408 |
| 11 | 1215 |
| 12 | 6400 |
| 13 | 383 |
| 14 | 17920 |
| 15 | 17151 |
| 16 | 66560 |
| 17 | 87551 |
| 18 | 333824 |
| 19 | 150527 |
| 20 | 1839104 |
| 21 | 22527 |
| 22 | 7954432 |
| 23 | 5451775 |
| 24 | 24133632 |
| 25 | 24338431 |
| 26 | 86343680 |
| 27 | 72138751 |
| 28 | 346095616 |
| 29 | 287670271 |
| 30 | 1376649216 |
| 31 | 1194524671 |
| 32 | 5374214144 |
| 33 | 4365615103 |
[1,1,4,3,16,23,96,47,320,351,1408,1215,6400,383, 17920,17151,66560,87551,333824,150527,1839104, 22527,7954432,5451775,24133632,24338431,86343680, 72138751,346095616,287670271,1376649216, 1194524671,5374214144,4365615103] |